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Jul 30, 2023

Double Chocolate Chip Banana Muffins

These chocolate, chocolate chip, banana, and cinnamon muffins are so easy to make, and will satisfy any chocolate lover's craving. 

Double Chocolate Chip Banana Muffin in pink paper liner.

These double chocolate banana muffins are reminiscent of the chocolate covered frozen bananas you might buy at a pop-up stand in the summer at the beach. The flavors bring back memories for me. 

Nearly every year, our family used to rent a house on Balboa Island for a week or two for our summer vacation. Sometimes our family would share a duplex with another family, and all of us kids would spend every day swimming or running around the little island. 

Balboa Island is the home of the chocolate covered frozen banana, and one of the biggest treats was getting one and choosing what kinds of sprinkles or nuts you wanted. These muffins remind me of those bananas. 

four Double Chocolate Chip Banana Muffins in a row.


Dutch process unsweetened cocoa. You can also use natural cocoa powder, but Dutch process will give you this amazing dark color. 

Pantry ingredients. all-purpose flour, baking powder, baking soda, salt, granulated sugar, vegetable oil, vanilla extract, and cinnamon.

Fridge ingredients. Sour cream and egg. 

Banana. The recipe calls for ripened, frozen, and then thawed bananas. I had no idea that once you thaw frozen bananas, they turn to liquid. I froze mine in their peel (you can do it either way), and I kind of poured them out of the skins into the measuring cup. 

Chocolate chips. Dark or semi-sweet chocolate chips.

Three Double Chocolate Chip Banana Muffins in a row.

Including baking time, these were ready in 45 minutes. You can use any sized chocolate chips you like. I used dark chocolate chips that are slightly larger. I think chocolate chunks would be amazing too. 

All you need is a muffin tin, whisk, rubber spatula, and a couple of bowls. Plus, you probably already have the ingredients in your pantry. Go for it!

More Double Chocolate Recipes!

Double Chocolate Chunk Cookies

Double Chocolate Rye Cookies

Double Chocolate Baked Donuts

Double Chocolate Cookies

Double Chocolate Zucchini Bread

Muffin Monday Badge and logo.

Double Chocolate Chip Banana Muffin in a pink muffin liner with polka dots.

Double Chocolate Chip Banana Muffins

Double Chocolate Chip Banana Muffins
Yield: 12 muffins
Author: Karen's Kitchen Stories
Prep time: 25 MinCook time: 20 MinTotal time: 45 Min
These chocolate, chocolate chip, banana, and cinnamon muffins are so easy to make, and will satisfy any chocolate lover's craving.


  • 175 grams (~1 1/4 cups) unbleached all purpose flour
  • 36 grams (1/3 cup) Dutch process unsweetened cocoa
  • 1 1/4 teaspoons baking powder
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/2 teaspoon cinnamon
  • 3/4 cup mashed banana (about 2 medium previously frozen bananas)
  • 1/3 cup sour cream
  • 1 large egg, room temperature
  • 1/2 cup granulated sugar
  • 1/4 cup vegetable oil
  • 1 teaspoon vanilla
  • Generous 1/2 cup dark or semi-sweet chocolate chips


  1. Heat the oven to 350 degrees F and line a 12 cup muffin tin with paper liners.
  2. Whisk the flour, cocoa, baking powder, baking soda, salt, and cinnamon together in a medium bowl.
  3. In a large bowl, whisk the banana and sour cream until smooth.
  4. Add the egg, sugar, oil, and vanilla until smooth.
  5. Fold in the flour mixture and chocolate chips until just combined.
  6. Portion evenly into the muffin tin.
  7. Bake for 18 to 20 minutes.
  8. Cool in the pan for about 2 minutes, and then on a wire rack.
muffins, chocolate, banana
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Would you like to comment?

  1. They look beautiful and fancy!! Glad you liked them :) Now I have to go look up Balboa island. Never heard of it but sounds fun.

    1. Thank you Hanaa. Balboa Island is a wonderful place. It's probably way more expensive now, and probably has more permanent residents, but it was the perfect place for a lazy vacation. It's very quaint.

  2. Nice photos!

  3. I bet the people in my department would love a batch of these....

    the photos are so beautiful, chocolate concoctions are not easy to photograph..

    1. Thanks Sally! Yes, just slightly easier than meat =)

  4. What a treat to read about Banana Island, the frozen banana trick and the mouth-watering chocolate muffins you've made! Loving your stories, Karen.

  5. They look pretty. I personally am not too fond of bananas, but these were moist and super-chocolatey

  6. Chocolate and banana are a great combo (even better if I could throw some peanut butter in there!). These look rich and perfectly fudgy! Lovely photos! : )

  7. As usual, your baking and pictures look astounding, Karen!

    I have had the chocolate covered bananas on Balboa Island, it's near Newport Beach. I had no idea that it's the home of this yummy treat! Thanks for posting it.

  8. Wow chocolate cupcakes lkng so yummy...

  9. The words "banana stand" remind me of one of my favorite shows, Arrested Development. 🤣 Those holidays on Balboa Island sound like perfection for children and probably their parents too. Your muffins are gorgeous, as usual, Karen!

    1. Oooh, I recently binged all of Arrested Development! Hilarious!

  10. You had me at double chocolate...but with bananas and cinnamon added, how could I possibly resist???

  11. Always thrilled about a new banana anything. My freezer is always full, especially during the summer months when they seem to go from green to overripe overnight.

  12. Double chocolate chip banana muffins looks delicious perfect, I like that you added both banana and chocolate chips and chcolate .


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