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Export 13 ingredients for grocery delivery
Step 1
Preheat oven to 350 degrees. Butter three 9-inch cake rounds. Dust with flour and tap out the excess.
Step 2
Mix together flour, sugar, cornstarch, cocoa, baking soda, baking powder, and salt in a stand mixer using a low speed until combined.
Step 3
Add eggs, buttermilk, warm water, oil, vanilla, vinegar, and food coloring. Beat on a medium speed until smooth. This should take just a couple of minutes.
Step 4
Divide batter among the three prepared pans.
Step 5
Bake for 30-35 minutes until the cake meets the toothpick test (stick a toothpick in and it comes out clean).
Step 6
Cool on wire racks for 15 minutes and then turn out the cakes onto the racks and allow to cool completely before frosting.
Step 7
Make the frosting. In a large bowl, beat together butter and cream cheese until fluffy. Use a hand mixer or stand mixer for best results. Add in vanilla extract. Beat until combined. Beat in powdered sugar, 1 cup at a time until frosting is smooth.
Step 8
Assemble and frost the completely cooled cake.