You can make a cake from scratch by mixing flour, baking powder, sugar, butter, eggs, and milk into a smooth, even batter without using packaged mixes. Combine the dry components in one bowl and cream the wet ingredients together separately before blending everything gently. Pour the batter into greased baking pans and bake in an oven heated to three hundred and fifty degrees until fully cooked. Allow the cake to cool down before spreading your favorite homemade frosting over the top.