Fluffy Banana Muffins with Creamy Peanut Butter Filling

There’s something magical about the blend of ripe bananas and smooth peanut butter—and these muffins bring that flavor combo to life in the most irresistible way. Each bite is soft, moist, and packed with banana flavor, while the rich peanut butter cream tucked inside adds a velvety surprise. Whether you’re prepping brunch, whipping up a treat for guests, or just want something cozy with your coffee, these muffins will absolutely hit the spot. The best part? The filling doubles as frosting!

Ingredients for Fluffy Banana Muffins with Creamy Peanut Butter Filling

Muffins:

• 1 3/4 cups all-purpose flour (220 g)

• 1 1/4 teaspoons baking powder (6.25 g)

• 1/2 teaspoon baking soda (2.5 g)

• 1/2 teaspoon salt (2.5 g)

• 3/4 cup sugar (150 g)

• 1/2 cup butter, room temperature (115 g)

• 2 large eggs

• 2 tablespoons milk (30 ml)

• 1 teaspoon vanilla extract (5 ml)

• 3–4 ripe bananas (approx. 345–460 g), mashed

Peanut Butter Filling:

• 1/2 cup peanut butter, smooth or chunky (125 g)

• 1/2 cup cream cheese, room temperature (115 g)

• 1 teaspoon vanilla extract (5 ml)

• 1 cup confectioners’ sugar (120 g)

• 1/2 package Cool Whip, 8 oz (115 g of 225 g tub), thawed

How to Make Fluffy Banana Muffins with Creamy Peanut Butter Filling

1. Preheat oven to 350°F (175°C). In a bowl, sift together the flour, baking powder, baking soda, and salt; set aside.

2. In a large mixing bowl, cream the butter. Add sugar, vanilla, eggs, and milk; beat until smooth.

3. Mash the bananas in a separate bowl and mix them into the wet ingredients.

4. Gradually stir in the dry mixture, blending until just combined—don’t overmix.

5. Line a muffin tin with cupcake liners and fill each almost to the top. This recipe should yield 12 large muffins.

6. Bake for approximately 20 minutes, or until a toothpick inserted into the center comes out clean.

7. Allow muffins to cool completely.

8. To make the peanut butter filling, beat together the peanut butter, cream cheese, and vanilla until smooth.

9. Add powdered sugar and beat again until light and fluffy.

10. Gently fold in the thawed Cool Whip.

11. Using a piping bag or zip-top bag with the tip cut off, pipe the filling into the center of each muffin.

12. You can also use the remaining cream as frosting. Optional—but highly recommended!

A Muffin Worth Making Again and Again

These banana muffins with their creamy peanut butter center aren’t just a baked good—they’re a whole experience. The fluffy texture, sweet banana base, and luscious filling combine to create a muffin that tastes like it came from a gourmet bakery. They’re easy to make but impressive enough to serve to company. Once you taste them, you’ll want to keep a batch on standby for any time you need a comforting, sweet bite. Enjoy every creamy, dreamy moment!