A delicate vanilla cake with a creamy white crumb and soft texture — inspired by vintage milk glass elegance.
Cake:
2½ cups cake flour
2 tsp baking powder
½ tsp salt
1 cup unsalted butter, softened
1¾ cups granulated sugar
5 egg whites
1 tbsp vanilla extract
½ cup sour cream
1 cup whole milk
Frosting:
1 cup unsalted butter (or cream cheese)
3–4 cups powdered sugar
1 tsp vanilla extract
2–3 tbsp cream or milk
Optional: white gel food coloring
Preheat oven to 350°F. Grease and line cake pans.
Sift dry ingredients together. Set aside.
Cream butter and sugar until fluffy. Add egg whites and vanilla.
Mix milk and sour cream. Alternate adding dry ingredients and milk mixture to batter.
Divide into pans. Bake 25–30 minutes until set. Cool completely.
Beat frosting ingredients until fluffy. Frost and decorate as desired.
Store frosted cake in fridge if using cream cheese.
Add edible flowers or sugar pearls for vintage charm.
Can be frozen unfrosted for up to 2 months.