With a mile-high crumb topping thats buttery flavored, sweet and bursting with brown sugar and cinnamon, Krusteaz Cinnamon Swirl Crumb Cake and Muffin Mix is a tough-to-top treat. Enjoy a warm slice for breakfast with coffee or serve it as a tasty afternoon snack. Krusteaz Cinnamon Swirl Crumb Cake and Muffin Mix is an easy-to-make staple for any pantryand so delicious, you may be tempted to make it all the time. Directions Youll Need: 2/3 cup water; 1 egg. Tip: For marbled effect, swirl batter with a knife before adding second topping layer. 1. Heat oven to 350 degrees F. Heat oven to 350 degrees F. Lightly grease 8x8-inch pan. 2. Stir with a spoon. Stir together water, egg and cake mix until blended. (Batter will be slightly lumpy.) Spoon half of batter into pan and spread evenly. Sprinkle half of the cinnamon topping (enclosed) over batter. 3. Drop with a spoon. Drop remaining batter in small spoonfuls over topping layer and spread to edge of pan. Sprinkle remaining topping evenly over batter. 4. Bake 40-45 minutes. Bake 40-45 minutes or until toothpick inserted in center comes out clean. For glass pan, add 5 minutes to bake time. Cool 5-10 minutes before cutting. Makes 12 servings. High Altitude (Over 5,000 Feet): Prepare as directed, adding 2 tablespoons all-purpose flour and an additional 1 tablespoon water.