Confetti Gooey Butter Cake

Deselect All

Crust:

Nonstick cooking spray, for the pan

One 15.25-ounce box white cake mix

1 1/2 teaspoons vanilla extract

3 large egg whites

1 stick (8 tablespoons) unsalted butter, melted and cooled

Filling:

One 8-ounce package cream cheese, at room temperature

1 1/2 teaspoons vanilla extract

3 large egg whites

4 tablespoons unsalted butter, melted and cooled

3 cups confectioners' sugar, plus more for dusting

1/2 cup multicolored sprinkles, plus more for garnish

Vanilla ice cream, for serving