Preheat oven to 350°F degrees (325°F for convection and high altitude). Prepare two 6-inch round cake pans with spray or parchment. (You can also use 7 or 8-inch round pans, just make sure your pans are not more than 2/3 full)
In the bowl of a stand mixer fitted with the whisk attachment, combine together flour, sugar, baking powder, and salt.
Add in milk, butter, extracts, and food color and whisk on low until ingredients are mostly incorporated. Add in egg whites last and mix until incorporated.
Divide batter between prepared cake pans and bake for 25-35 minutes, or until a toothpick is inserted and comes out mostly clean, just not wet.
Cool before assembling the cake.