A reliable vanilla birthday cake recipe featuring rainbow sprinkles suspended evenly throughout the batter, ensuring no sinking and a tender, moist crumb.
Coating sprinkles in a teaspoon of flour before folding them in prevents them from sinking to the bottom. Do not overmix the batter once flour is added to ensure a tender crumb. For gluten-free, use a 1:1 gluten-free flour blend. For dairy-free, swap butter for margarine and milk for oat/soy milk.
Keywords: birthday cake, rainbow sprinkles, vanilla cake, easy baking, sheet cake, celebration dessert