Combine Cinnamon Muffin Melt Mix™ Packet 1 with water, sour cream and eggs. Spread half of batter in greased 9-inch springform pan. Mix Packet 2 with melted butter (mixture will be crumbly). Sprinkle half of cinnamon mixture over the batter. Spread with remaining batter; top with remaining cinnamon mixture.
Bake at 350° for 30-40 minutes or until toothpick inserted in center comes out clean. Cool in pan for 10 minutes. Makes 10-12 servings.