1Heat oven to 400°F. Spray 10-inch ovenproof skillet with cooking spray. Heat chili in skillet over medium heat, stirring occasionally, just until simmering. Remove from heat.
2Stir Bisquick mix, milk and egg in small bowl with fork or wire whisk until blended. Spoon batter in ring around outer edge of chili. Sprinkle 1/2 cup of the cheese over batter.
3Bake about 20 minutes or until crust is golden brown and knife inserted in center of crust comes out clean. Immediately sprinkle remaining 1/2 cup cheese over center. Let stand 5 minutes before serving.