These flourless Chocolate Protein Muffins pack in the nutrients, but taste like a brownie. They are quickly mixed up in a blender and have so many nutrients tucked inside. Plus: They store so well in the fridge!
Chocolate Protein Muffins
Muffins are one of those foods that we like to have in the house for easy breakfasts and snacks since they store so well in the fridge and are so easy to eat. These protein muffins taste like a moist brownie, but have a load of nutrition inside…including veggies!
Honestly, you’d never know they were in there, but it’s nice to get in a little extra nutrition, right?
Healthy Chocolate Muffins
I don’t advocate sneaking veggies into everything we serve our kids—we want (and need!) our kids to trust us with the food we feed them—so I love making these with my kids and having them help me add the ingredients.
The zucchini, kale, and ripe banana adds moisture and flavor. The cocoa powder makes each bite super chocolatey, which my little taste testers think they is super yummy.
I love these muffins since they are packed with protein and healthy fats, which means that they provide nicely balanced and long lasting energy for our busy little people. Plus, the texture is super soft and moist, which makes them easy for younger toddlers to chew and swallow.
TIP: Dice the muffin for little ones about 16 months old and younger so it’s easier for them to chew—and to avoid them from stuffing large pieces into their mouths.

Ingredients You Need
To make this recipe you’ll need:
- Peanut butter (or Sunbutter to make them nut-free)
- Eggs
- Honey (or maple syrup)
- Raw zucchini (or yellow summer squash)
- Kale (or spinach)
- Ripe banana
- Cocoa powder
- Baking powder
- Vanilla extract
TIP: Use a very ripe banana with brown spots for the best natural sweetness.

Step-by-Step Instructions
Here’s a look at the process involved in making this recipe. Scroll to the bottom for all of the info.
- Start by gathering your ingredients. Your banana should be super ripe for optimal sweetness.
- Add all ingredients to a blender.
- Blend, stopping to scrape down the sides or move the mixture around with the stick that came with it (if one did).
- Divide batter in a greased muffin tin. Top with chocolate chips if using.
- Bake and test for doneness with toothpick or cake tester. Let cool.
TIP: Let the muffins cool in the pan for 5-10 minutes to make it easier to get them out of the pan.

Frequently Asked Questions
Our kids are usually getting plenty of protein without us worrying too much about it, but it is an essential nutrient for balanced energy. Each regularly sized muffin has 7 grams of protein which is a nice dose!
You can use a food processor though definitely let it process for at least a minute to try to get the greens fully blended. A blender usually makes a more uniform texture, which is why I use it here.
You can bake these as full size muffins or minis, depending on your preference. And this batter also works in a donut pan should you want to go that route. It’s nice that it’s so versatile so you can adjust for the appetites in your household.
I’m always amazed at the texture of these muffins, which is light and moist. I tend to like the flavor better when these are served chilled, but taste them both ways and see what you think.
What’s the best way to clean a blender?
This batter is a little sticky due to the volume of nut butter, so here’s the best way to clean your blender.
- Fill the blender 1/2-¾ full of warm to hot water. Add a squirt of dish soap.
- Put the top on securely and blend, starting on low and working up to high. Keep going until the sides of the blender are clean. (Any stuck on batter will come off from the friction of the water!)
- Rinse out.

Best Tips for Success
- Use a very ripe banana with brown spots for the best natural sweetness.
- If your peanut butter has been in the fridge, let it sit at room temperature for an hour before using OR warm for 15 seconds in the microwave.
- Spray your measuring cup with nonstick spray before measuring the honey to make it easier to pour out.
- Stir a handful of chocolate chips into the batter to make it slightly sweeter.
- Let the muffins cool in the pan for 5-10 minutes to make it easier to get them out of the pan.
- I find that these taste best with greens that have been frozen and once the muffins have been fully cooled (and even chilled in the fridge for a bit!)
- Dice the muffin for little ones as needed.
- Store for 3-5 days in an airtight container in the fridge or in a sealed freezer bag in the freezer for up to 3 months. Thaw overnight in the fridge or at room temperature.
- You may also like my Banana Oatmeal Muffins, Protein Shakes, and Black Bean Brownies.
I’d love to hear your feedback on this recipe, so please comment below to share!
This post was originally published June 2019.

Chocolate Protein Muffins (With Veggies!)
Ingredients
- 1 cup peanut butter or Sunbutter
- 1 cup roughly chopped very ripe banana
- 1 cup roughly chopped raw zucchini (or summer squash)
- 1 cup kale leaves, lightly packed (or spinach)
- 3 eggs
- 1/4 cup honey (or maple syrup)
- 1 teaspoon vanilla extract
- 1/4 cup cocoa powder
- 2 tablespoons ground flaxseeds
- 1 teaspoon baking powder
- chocolate chips (optional)
Instructions
- Preheat oven to 350 degrees F and grease a mini or standard-size muffin tin with nonstick spray.
- Place all ingredients into a blender. Blend until very smooth, stopping to scrape down the sides of the blender and/or using the stick that came with it to move the ingredients around if needed.
- Fill muffin cups about ½ full using about ¼ cup batter in each. Top with chocolate chips, if using.
- For regular muffins: Bake 22-24 minutes or until a cake tester inserted into the center comes out clean.
- For mini muffins (or a donut pan): Bake 14-16 minutes or until a cake tester inserted into the center comes out clean.
- Let cool for 5-10 minutes in the pan, run a knife around the edges, and carefully transfer to a wire rack to cool.
Equipment
Video
Notes
- Store for 3-5 days in an airtight container in the fridge or in a sealed freezer bag in the freezer for up to 3 months. Thaw overnight in the fridge or at room temperature.
- Use a very ripe banana with brown spots for the best natural sweetness.
- I use natural unsweetened peanut butter in this recipe.Â
- Nut-free: Use Sunbutter instead of peanut butter.
- If your peanut butter has been in the fridge, let it sit at room temperature for an hour before using OR warm for 15 seconds in the microwave.
- Spray your measuring cup with nonstick spray before measuring the honey to make it easier to pour out.
- Stir a handful of chocolate chips into the batter to make it slightly sweeter.
- Let the muffins cool in the pan for 5-10 minutes to make it easier to get them out of the pan.
- I find that these taste best with greens that have been frozen and once the muffins have been fully cooled (and even chilled in the fridge for a bit!).
Nutrition

Chocolate Protein Muffins (With Veggies!)
Ingredients
- 1 cup peanut butter or Sunbutter
- 1 cup roughly chopped very ripe banana
- 1 cup roughly chopped raw zucchini (or summer squash)
- 1 cup kale leaves, lightly packed (or spinach)
- 3 eggs
- 1/4 cup honey (or maple syrup)
- 1 teaspoon vanilla extract
- 1/4 cup cocoa powder
- 2 tablespoons ground flaxseeds
- 1 teaspoon baking powder
- chocolate chips (optional)
Instructions
- Preheat oven to 350 degrees F and grease a mini or standard-size muffin tin with nonstick spray.
- Place all ingredients into a blender. Blend until very smooth, stopping to scrape down the sides of the blender and/or using the stick that came with it to move the ingredients around if needed.
- Fill muffin cups about ½ full using about ¼ cup batter in each. Top with chocolate chips, if using.
- For regular muffins: Bake 22-24 minutes or until a cake tester inserted into the center comes out clean.
- For mini muffins (or a donut pan): Bake 14-16 minutes or until a cake tester inserted into the center comes out clean.
- Let cool for 5-10 minutes in the pan, run a knife around the edges, and carefully transfer to a wire rack to cool.
Equipment
Video
Notes
- Store for 3-5 days in an airtight container in the fridge or in a sealed freezer bag in the freezer for up to 3 months. Thaw overnight in the fridge or at room temperature.
- Use a very ripe banana with brown spots for the best natural sweetness.
- I use natural unsweetened peanut butter in this recipe.Â
- Nut-free: Use Sunbutter instead of peanut butter.
- If your peanut butter has been in the fridge, let it sit at room temperature for an hour before using OR warm for 15 seconds in the microwave.
- Spray your measuring cup with nonstick spray before measuring the honey to make it easier to pour out.
- Stir a handful of chocolate chips into the batter to make it slightly sweeter.
- Let the muffins cool in the pan for 5-10 minutes to make it easier to get them out of the pan.
- I find that these taste best with greens that have been frozen and once the muffins have been fully cooled (and even chilled in the fridge for a bit!).
Do you think Almond butter can be used in place of Peanut butter?
Sure, that should work similarly.
My ultimate mom food. My two toddlers love them but truthfully I make them for me! This recipe is incredible. Super easy to throw together and I feel so nourished when I eat them. I never leave out the chocolate chips though. A weekly make in my house. Freeze well.
Picky eater approved! And I prefer if he has more than 1!!
What weight of frozen spinach would you recommend for this recipe? Thanks!