Name: Old-Fashioned Sour Cream Crumb Cake
Prep time: 20 min
Cook time: 30 min
Total time: 1 h 10 min
Yield: serves 9-12
Ingredients: 1/3 cup (67g) packed dark or light brown sugar; 1/2 (62g) cup all-purpose flour; 1 and 1/2 teaspoons ground cinnamon; 3 Tablespoons (43g) unsalted butter, cold and cubed; 1 and 1/3 cups (166g) all-purpose flour (spoon & leveled); 1 teaspoon baking powder; 1/4 teaspoon baking soda; 1/4 teaspoon salt; 1/2 cup (115g) unsalted butter, softened to room temperature; 3/4 cup (150g) granulated sugar; 2 large eggs, at room temperature; 2 teaspoons pure vanilla extract; 1/2 cup (120ml) full-fat sour cream, at room temperature*; 1/2 cup (60g) confectioners' sugar, sifted; 1/2 teaspoon pure vanilla extract; 2 Tablespoons (30ml) heavy cream or milk