Blueberry Sour Cream Coffee Cake Ina Garten. (recipe via the food network.) 1 teaspoon pure vanilla extract;
1/2 teaspoon grated lemon zest; 2 tablespoons pure maple syrup.
402 Blueberry Crumb Cake Blueberry Crumb Cake Crumb
6 tablespoons unsalted butter, at room temperature (3/4 stick) 3/4 cup granulated sugar; Add the eggs one at a time, then add the vanilla and sour cream.