Butterfinger - Butterfinger Crumb Cake

Ingredients

• 2 cups all-purpose flour
• 1 cup firmly packed brown sugar
• 1/2 cup granulated sugar
• 1/2 cup (1 stick) butter or margarine, softened
• 1/2 cup of Butterfinger Baking Bits
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup milk
• 1/2 cup plain yogurt
• 1 large egg
• 1 teaspoon vanilla extract