RECIPE FOR BANANA CAKE USING YELLOW CAKE MIX RECIPES

Steps:

• Preheat the oven to 325 degrees. Grease and flour three 8x2 inch round cake pans. Place a piece of parchment in the bottom of each pan.
• Put the first 5 ingredients into the bowl of your mixer. Mix on low speed for at least 30 seconds to combine.
• Add the softened butter (cut into pieces) mix on low speed just until it looks like coarse sand. The dry ingredients will be moistened/coated by the butter and will stick to together if you press some between two fingers. Don't over-mix or it will turn into a large dough-like ball.
• Add the eggs 1 at a time, mixing until blended. 
• Add the vanilla to the 1 cup buttermilk. With the mixer on lowest speed gradually pour into the mixer. Increase the speed to #2 or # 3 (on a KitchenAid mixer). Mix for 2 minutes. Batter will be fluffy and smooth. If you are using a hand mixer rather than a stand mixer, you will need to mix a bit longer.
•    Divide batter evenly between your three prepared (8 inch) pans.
• Bake at 325 degrees for 25 to 30 minutes. Cool for 5 minutes and turn out of pans. 
• Add butter and mix on low to medium speed until smooth. Add vanilla and blend into the butter. Add powdered sugar, salt, and cocoa powder.
• Add most of the milk. Begin mixing at low speed so you won't have a cloud of powdered sugar in your kitchen.
• Continue to mix adding remaining milk as needed. It may take 5 to 6 minutes to reach the smoothness and consistency you like. It will take longer if using a hand mixer. As you mix the frosting will become very smooth. You can add additional milk (1 Tablespoon at a time) if the frosting is too thick or additional powdered sugar if too soft.

Steps:

• Make the cake: Place the 8 ounces cream cheese for the frosting in the bowl of a stand mixer and let it sit out at room temperature while you make the cake. (Alternatively, use an electric hand mixer and large bowl.) Arrange a rack in the middle of the oven and heat the oven to 350°F. Coat 2 (9-inch) round cake pans with cooking spray, then line the bottoms with rounds of parchment paper.
• Place 1 cup full-fat sour cream, 1/2 cup whole milk, 1/3 cup vegetable oil, and 3 large eggs in a large bowl and whisk until smooth. Add 1 box cake mix and 1 box banana cream pudding mix and whisk until smooth. Evenly divide the batter between the prepared baking pans.
• Bake until the cakes are lightly browned and a toothpick inserted into the center comes out clean, 20 to 25 minutes. Place the pans on a wire rack and cool completely. Meanwhile, make the frosting.
• Make the frosting: Add 1 1/4 cups powdered sugar and 2 teaspoons vanilla extract to the bowl of cream cheese. Beat with the whisk attachment on medium speed until smooth, 3 to 4 minutes. Reduce the mixer speed to low and gradually pour in 3 cups cold heavy cream. Continue beating until the mixture thickens and is smooth, 4 minutes. Increase the speed to medium and beat until the frosting is light, fluffy, and doubled in volume, 1 to 2 minutes. Transfer 1 cup of the frosting to a small zip-top bag and set aside.
• Assemble the cake: Place 3 1/2 cups of the Nilla Wafers in a large zip-top bag. Seal the bag and gently crush the wafers with a rolling pin or the bottom of the frying pan into coarse crumbs. Peel and thinly slice 2 medium ripe (but not spotty) bananas.
• Remove the cakes from the pans. Using a serrated knife, trim the rounded tops off of each cake. Place one cake layer, cut-side down, onto a serving platter or cake stand. Dollop with 1 cup of the frosting and smooth into a thin layer from edge to edge with an offset spatula. Top with the sliced bananas, then 1 cup of the crushed Nilla Wafers in an even layer.
• Top with the remaining cake layer. Frost the top and sides of the cake with the remaining frosting. Cover the sides of the cake with the remaining crushed Nilla Wafers by taking a handful of the crushed cookies and gently pressing them against the side of the cake (start at the bottom and work your way up) so they stick to the frosting. Any pieces that don’t stick and fall off can be pressed back into the frosting until the sides are completely covered.
• Snip off one bottom corner of the bag of frosting. Pipe small decorative mounds of the frosting around the top of the cake. Insert a whole Nilla Wafer between each mound of frosting.