Crumb Cake Recipe - Average Betty

Ingredients

• 1/2 cup butter
• 3/4 cup light brown sugar
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1 teaspoon cinnamon
• 1/2 teaspoon ginger
• 1/4 tsp coarse salt
• 2 large eggs
• 1 tsp. pure vanilla extract
• 1 1/2 cups unbleached, all-purpose flour
• 1 cup sour cream