Step 1

Preheat the oven to 350°F (177°C). Grease three 9-inch round cake pans, line with parchment paper rounds, then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. (If it’s helpful, see this parchment paper rounds for cakes video & post.)

Step 2

**Time-saving tip** Brown the butter in step 8 now, then place into the refrigerator to solidify as instructed below. This will save time when you’re ready to make the frosting.

Step 3

Mash the bananas. I usually just use my mixer for this! Set mashed bananas aside.

Step 4

Whisk the flour, baking powder, baking soda, cinnamon, and salt together. Set aside.

Step 5

Using a handheld or stand mixer fitted with a paddle attachment, beat the butter, granulated sugar, and brown sugar together on high speed until smooth and creamy, about 2 minutes. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed. Add the eggs and the vanilla. Beat on medium-high speed until combined, then beat in the mashed bananas. Scrape down the sides and up the bottom of the bowl as needed. With the mixer on low speed, add the dry ingredients in three additions alternating with the buttermilk and mixing each addition just until incorporated. Do not overmix. The batter will be slightly thick. A few lumps is OK.

Step 6

Divide batter evenly between 3 pans. Bake for 22-26 minutes. Baking times vary, so keep an eye on yours. The cakes are done when a toothpick inserted in the center comes out clean.

Step 7

Remove the cakes from the oven and set on a wire rack. Allow to cool completely in the pan.

Step 8

Slice the butter up into pieces and place in a light-colored skillet. (Light colored helps you determine when the butter begins browning.) Melt the butter over medium heat, stirring occasionally. Once melted, the butter will begin to foam. Keep stirring occasionally. After 5-8 minutes, the butter will begin browning—you’ll notice lightly browned specks begin to form at the bottom of the pan and it will have a nutty aroma. See photo above for a visual. Once browned, remove from heat, and immediately pour into a heat-proof bowl. Refrigerate until solid.

Step 9

In a large bowl using a handheld or stand mixer fitted with a paddle or whisk attachment, beat the solid brown butter on high speed until creamed. Add the cream cheese and beat on high speed until combined, smooth, and creamy. Add 4 cups confectioners’ sugar, vanilla, and salt. Beat on low speed for 30 seconds, then switch to high speed and beat for 2 minutes. If you want the frosting a little thicker, add the extra 1/4 cup of confectioners sugar.

Step 10

Place 1 cake layer on your cake stand, cake turntable, or serving plate. Evenly cover the top with frosting. Top with 2nd layer and evenly cover the top with frosting. Finish with the third cake layer and spread the remaining frosting all over the top and sides. Garnish with chopped nuts. Refrigerate for at least 30 minutes before slicing or else the cake may gently fall apart as you cut.

Step 11

Cover leftover cake tightly and store in the refrigerator for 5 days.