Let me tell you about the recipe that turned my picky eater into a veggie lover: Spinach Monster Muffins! I’ll never forget the first time I made these with my niece. She took one look at the bright green batter and screamed, “Auntie, you’re making Shrek cupcakes!” We laughed so hard we almost forgot we were baking something healthy.

These playful muffins are my secret weapon for sneaking greens into treats. The spinach and avocado keep them incredibly moist (seriously, they stay fresh for days), while the chocolate chips and googly candy eyes make them irresistible. Last Halloween, I brought a batch to my son’s classroom party, and the kids went wild – they couldn’t believe something so fun could be good for them too!
What I love most is how forgiving this recipe is. Even when I’m rushing through my morning routine, I can whip up a batch before the coffee finishes brewing. The batter comes together in minutes thanks to my trusty blender, and that vibrant green color makes me feel like a kitchen magician every single time.
Table of Contents
Why You’ll Love These Spinach Monster Muffins
Listen, I know what you’re thinking, spinach in muffins? But trust me, once you try these, you’ll be hooked. Here’s why these little green monsters have become my go-to treat:
- Secretly healthy – The spinach and avocado pack in nutrients without that “ugh, veggies” taste. My kids have no idea they’re eating something good for them!
- Moist for days – Unlike dry, crumbly muffins, these stay soft thanks to the avocado. I’ve kept them on the counter for three days (okay, who am I kidding, they never last that long).
- Foolproof fun – Even if you burn toast regularly, you can’t mess these up. The blender does most of the work, and the candy eyes hide any imperfections.
- Crowd pleaser – Perfect for school parties, playdates, or when you need to bribe your toddler into wearing pants. The googly eyes make everyone smile.
Seriously, these muffins are like a magic trick, healthy ingredients disappear into something your family will actually beg for. The first time I made them, my neighbor’s kids asked if I could be their new aunt. That’s when I knew I had a winner!

Ingredients for Spinach Monster Muffins
Here’s everything you’ll need to bring these adorable green monsters to life! I’ve learned through trial and error that quality ingredients make all the difference with this recipe. Trust me, grabbing that slightly-too-firm avocado or pre-shredded spinach will leave you with sad, dull muffins.
The Wet Team:
- 3 cups fresh spinach – Pack it lightly into your measuring cup. Baby spinach works great if you’re lazy like me!
- 1 cup milk – Whole milk makes them extra rich, but I’ve used almond milk in a pinch.
- 2 large eggs – Room temp eggs blend smoother, just let them sit out while you prep everything else.
- 1 ripe avocado – When it yields slightly to gentle pressure, it’s perfect. No brown spots!
- 2 tablespoons melted butter – Unsalted is best so you control the saltiness.
The Dry Crew:
- 2 cups all-purpose flour – Spoon it into the cup and level off, don’t scoop directly!
- 1/2 cup brown sugar – Pack it firmly like you’re mad at it. This gives just the right sweetness.
- 3 teaspoons baking soda – Yes, teaspoons! It sounds wild but makes them rise beautifully.
- 1 teaspoon salt – I use kosher salt, it disperses better than table salt.
The Fun Extras:
- 1/2 cup chocolate chips – Mini chips distribute better, but regular work fine.
- Candy eyes – The big googly ones from the baking aisle make them look hilarious!
Equipment You’ll Need for Spinach Monster Muffins
Okay, let’s talk tools! Here’s what you’ll want to grab from your kitchen before diving into these monster muffins:
- 2 muffin pans – Standard 12-cup pans work best.
Pro tip: Even if you’re just making 16 muffins, having two pans prevents batter overflow disasters! - Food processor or blender – My Ninja blender pulverizes the spinach into velvet smoothness, but any decent processor works.
- Measuring cups and spoons – Especially that 1/4 cup measure for perfectly portioned muffins.
- Rubber spatula – For scraping every last bit of that gorgeous green batter.
- Muffin liners – The cute Halloween-themed ones make these extra festive!
That’s it! No fancy gadgets needed, just basics most bakers already have. Though I won’t judge if you “accidentally” buy that adorable monster-shaped muffin pan you’ve been eyeing…

How to Make Spinach Monster Muffins
Alright, let’s dive into the fun part – making these adorable green monsters come to life! I promise it’s easier than you think, and the results will make you feel like a baking rockstar. Here’s exactly how I make them every single time (with all my messy kitchen trial-and-error wisdom baked right in!).
Step 1: Preparing the Batter
First things first – that gorgeous green batter! This is where the magic starts, and I’ve learned a few tricks to get it perfect:
Throw your spinach, milk, eggs, avocado, and melted butter into your blender or food processor. Now here’s my secret – blend for a full 5 minutes. I know it seems long, but trust me, you want that spinach completely obliterated into smooth, vibrant green liquid. Stop halfway to scrape down the sides if needed.
The first time I made these, I got impatient after 2 minutes and ended up with little spinach flecks that my nephew called “mold spots.” Not cute! Now I set a timer and let the machine work its magic until the mixture looks like something the Hulk would drink for breakfast – smooth, uniform, and shockingly green.
Step 2: Combining Dry and Wet Ingredients
Okay, here’s where things get serious. In your big mixing bowl, whisk together all your dry ingredients – flour, brown sugar, baking soda, and salt. Make sure everything’s evenly distributed before adding the wet stuff.
Now pour that gorgeous green spinach mixture into the dry ingredients. Grab your spatula and gently fold everything together. The key word here is GENTLY – overmixing makes tough muffins, and nobody wants that. I do about 15-20 folds until there’s just a few flour streaks left, then add the chocolate chips and fold maybe 5 more times.
Pro tip from my many kitchen fails: If some lumps remain, it’s totally fine! They’ll bake out. But if you keep mixing to get it perfectly smooth, you’ll activate too much gluten and end up with dense little hockey pucks instead of fluffy muffins.
Step 3: Baking and Decorating
Time to bring these monsters to life! Line your muffin pans and fill each cup about 3/4 full with batter (I use an ice cream scoop for perfect portions every time). Here’s where the real fun begins – decorating!
Gently press a few extra chocolate chips onto the top of each muffin – this makes them look extra tempting when baked. Then, while the batter’s still wet, add 2-3 candy eyes per muffin. Press them in just enough so they’ll stay put but not so deep they disappear during baking.
Pop them in your preheated 375°F oven and set a timer for 15 minutes. At this point, start checking with a toothpick – it should come out clean or with just a few moist crumbs when they’re done. Mine usually take about 17 minutes, but every oven is different.
The hardest part? Letting them cool for at least 10 minutes before devouring! The candy eyes might look a bit melty when they come out, but they firm up as they cool into perfect silly monster faces. Just try not to laugh too hard when you see their googly expressions!

Tips for Perfect Spinach Monster Muffins
After burning through more spinach than Popeye while perfecting this recipe, I’ve learned all the tricks to monster muffin success. Follow these tips and you’ll be the neighborhood’s green-thumbed baking hero!
- Don’t over-blend the batter – Once you add dry ingredients, fold gently with a spatula just until combined. I learned this the hard way when my first batch came out dense enough to build houses with.
- Check your oven temp – My mom’s ancient oven runs hot, so I use an oven thermometer. At 375°F, they’re perfect in 16 minutes – any longer and they turn from monster to mummy!
- Pack that spinach lightly – No need to cram 3 cups down. I just toss it in the measuring cup until it looks right – too much makes them bitter.
- Let them cool completely – I know it’s torture, but 10 minutes in the pan then 10 more on a rack prevents soggy bottoms. Patience makes perfect monster faces!
My biggest tip? Have fun with it! The first time I made these, my candy eyes slid right off because I was too impatient. Now I know – slightly cooled batter holds decorations best. And if they look wonky? More eyes fix everything!
Variations and Substitutions for Spinach Monster Muffins
One of my favorite things about this recipe is how flexible it is! Over the years, I’ve played around with so many variations, some intentional, some desperate pantry raids, and they’ve all turned out delicious. Here are my favorite tweaks when I want to mix things up:
- Dairy-free delight – Swap the milk for almond or oat milk and use coconut oil instead of butter. My vegan sister-in-law couldn’t believe these were “accidentally” plant-based!
- Nutty monsters – Fold in 1/3 cup chopped walnuts or pecans for crunch. My dad loves this version with an extra pinch of cinnamon.
- Berry beasts – Replace half the chocolate chips with dried cranberries or fresh blueberries. The tartness balances the sweetness perfectly.
- Protein-packed – Add 2 scoops of vanilla protein powder (reduce flour by 1/4 cup) for post-workout monsters. My gym buddy swears by these!
The best part? Even my “oops” substitutions worked, like the time I used frozen spinach (thawed and squeezed dry) when I ran out of fresh. Just keep the wet/dry ratios about the same, and these forgiving muffins will still turn out great!

Serving and Storing Spinach Monster Muffins
Here’s the best part – these muffins taste amazing warm or at room temperature! I love serving them fresh from the oven when the chocolate chips are still melty (just warn the kids about hot sugar – learned that the hard way). For parties, arrange them on a platter with extra candy eyes nearby so guests can add more personality!
Leftovers (ha! As if!) keep wonderfully in an airtight container at room temp for 2 days. If by some miracle they last longer, pop them in the fridge for up to 5 days. My favorite trick? Split one in half, toast it lightly, and spread with cream cheese for a monster breakfast treat that’ll make you feel fancy.
They freeze beautifully too – just wrap each cooled muffin tightly in plastic and store in a freezer bag. When the monster craving hits, microwave for 20 seconds or thaw overnight. The candy eyes might get a little foggy, but the taste stays perfect!
Spinach Monster Muffins Nutritional Information
Now let’s talk nutrition – because believe it or not, these fun little monsters pack a healthy punch! Each muffin comes in around 170 calories with 2g of fiber and 4g of protein. The avocado and spinach deliver vitamin K, folate, and healthy fats, while the dark chocolate chips add antioxidants (yes, I’m calling chocolate a health food now!).
Of course, these numbers are estimates – your exact counts will vary slightly based on ingredient brands and how generously you stuff those muffin cups. I’m no dietitian, just a mom who gets way too excited about sneaking greens into treats. But hey, if my kids are eating spinach and asking for seconds, I’m calling that a nutritional win!
FAQs About Spinach Monster Muffins
Can I Make Spinach Monster Muffins Gluten-Free?
Absolutely! My gluten-free friend swears by using a 1:1 gluten-free flour blend instead of regular flour. I’ve had great results with Bob’s Red Mill and King Arthur blends – just be sure to pick one with xanthan gum already added. The texture comes out slightly denser but still delicious.
Pro tip: Let the batter rest for 5 minutes before baking to help the GF flour absorb moisture.
How Do I Keep the Muffins Green?
That vibrant color fades a bit after baking (they turn more olive green), but here’s my trick – add 1/2 teaspoon of lemon juice to the spinach mixture before blending! The acid helps preserve the bright color. Also, avoid overbaking – pull them out as soon as the toothpick comes clean. My worst batch turned army green because I forgot them in the oven (oops!).
Can I use frozen spinach?
Yes! Just thaw it completely and squeeze out ALL the excess water (I use a clean kitchen towel). You’ll need about 1/2 cup packed after squeezing.
Can I freeze these?
They freeze beautifully for up to 3 months! Cool completely, then wrap individually in plastic before freezing. Thaw at room temperature or microwave for 20 seconds.
Why did my muffins sink in the middle?
Usually this means your baking soda was old or you overmixed the batter. Always test your baking soda by mixing 1/4 tsp with vinegar – it should bubble vigorously!

Share Your Spinach Monster Muffins Creations
I want to see your monster muffin masterpieces! Snap a photo of your silliest, greenest creations and tag me on Instagram. Nothing makes me happier than seeing all the creative ways you decorate these, and don’t forget to follow me on Pinterest for more easy and simple recipes. Last week, someone made them with vampire teeth candy, and I nearly died laughing!
Did your kiddos give their muffins funny names? Did you invent an awesome new variation? Share your stories in the comments below! Let’s build a whole monster muffin army together, the goofier, the better!
More Halloween Recipes You’ll Love
If you enjoyed these Spinach Monster Muffins, you’ll love these other festive and spooky recipes that are just as fun to make and serve:
- Jack Skellington Oreo Pops
- Zombie Brain Cupcakes
- Hocus Pocus Binx Cookies
- Ghost Marshmallow Brownies
Spinach Monster Muffins
- Total Time: 33 minutes
- Yield: 16 muffins 1x
- Diet: Vegetarian
Description
Spinach Monster Muffins are a playful and healthy treat that kids and adults will love. The spinach and avocado keep the muffins moist and add nutrients, while the chocolate chips and candy eyes make them perfect for Halloween fun.
Ingredients
- 3 cups fresh spinach
- 1 cup milk
- 2 large eggs
- 1 ripe avocado
- 2 tablespoons butter, melted
- 2 cups all-purpose flour
- 1/2 cup brown sugar
- 3 teaspoons baking soda
- 1 teaspoon salt
- 1/2 cup chocolate chips
- Candy eyes for decoration
Instructions
- Preheat oven to 375°F. Line two 12-cup muffin pans with paper liners.
- In a large bowl, whisk together flour, brown sugar, baking soda, and salt.
- In a food processor or blender, combine spinach, milk, eggs, avocado, and melted butter. Blend until completely smooth, about 5 minutes.
- Pour the spinach mixture into the dry ingredients. Stir until combined.
- Fold in the chocolate chips.
- Spoon about 1/4 cup batter into each muffin liner. Top with a few extra chocolate chips and gently press in candy eyes.
- Bake for 15-18 minutes, until the tops are set and a toothpick inserted comes out clean.
- Let cool before serving.
Notes
- Store muffins in an airtight container for up to 3 days.
- For a dairy-free version, use almond milk and coconut oil instead of milk and butter.
- Prep Time: 15 minutes
- Cook Time: 18 minutes
- Category: Halloween
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 muffin
- Calories: 170 kcal
- Sugar: 10g
- Sodium: 350mg
- Fat: 6g
- Saturated Fat: 2g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 25g
- Fiber: 2g
- Protein: 4g
- Cholesterol: 30mg
Keywords: Spinach Monster Muffins, healthy muffins, Halloween treats, spinach recipe, kid-friendly snacks