Ingredients
Equipment
Method
Bake the Cake
- Heat oven to 350F. Butter two 9-inch pans, line bottoms with parchment, and dust with flour. Whisk cake flour, baking powder, and salt in a bowl.
- Beat butter and sugar on medium-high until pale and fluffy, about 4 minutes. Add eggs one at a time, beating well after each, then mix in vanilla.
- On low speed, add flour mixture in three additions alternating with milk in two additions, beginning and ending with flour. Mix just until smooth.
- Divide between pans and bake until golden and a toothpick comes out clean, 22-25 minutes. Cool in pans 10 minutes, then turn out onto racks to cool completely.
Make the Chantilly Cream
- Beat heavy cream on medium-high until soft peaks form, about 3 minutes. Add mascarpone, powdered sugar, and vanilla. Beat until stiff peaks form, 1-2 minutes more. Do not overbeat.
Assemble the Cake
- Place one cake layer on a platter. Spread with 1 cup cream and top with half the strawberries and half the raspberries. Add second layer, spread with 1 cup cream, and top with remaining berries. Spread remaining cream on sides.
- Press blueberries gently into the cream on the sides. Chill at least 30 minutes before slicing. The cake holds well refrigerated up to 24 hours.
Notes
Cake flour is essential for the tender crumb - do not substitute all-purpose. For clean slices, dip your knife in hot water and wipe dry between cuts. The mascarpone stabilizes the cream beautifully, but you can use cream cheese in a pinch for a tangier flavor.
