8 tablespoons unsalted butter, room temperature |
1 cup granulated sugar |
1 1/2 cups unbleached all-purpose flour |
1 1/2 teaspoons baking powder |
1/2 teaspoon table salt |
1/2 cup sour cream |
2 large eggs, room temperature |
1 large egg yolk, room temperature |
2 teaspoons vanilla extract |
1 cup strawberry jelly |
peanut butter cream cheese frosting, recipe follows |
confetti pastel sprinkles, for garnish |
1 (8-ounce) package cream cheese, room temperature |
4 tablespoons unsalted butter, room temperature |
1 teaspoon vanilla extract |
1 cup creamy peanut butter |
1 1/2 cups confectioners' sugar |