Spray 11"x7" baking dish with nontick cooking spray.
Brown beef with onion, bell pepper and garlic in large deep skillet or dutch oven over medium heat. Drain fat. Stir in corn, salsa, cocoa, cumin, 1 tsp salt, oregano and cinnamon. Bring to a boil. Reduce heat to medium-low; simmer uncovered 8 minutes, stirring occasionally.
Remove from heat; stir in cheese and cilantro.
Spread into prepared dish.
Combine flour, cornmeal, sugar, baking powder and remaining 1/2 tsp salt in large bowl. Add milk, butter and egg; stir just until dry ingredients are moistend.
Drop by spoonfuls evenly over meat mixture; spread batter evenly with spatula.
Bake 15 minutes. Reduce oven temperature to 350 degrees and bake 20 minutes or until topping is light brown and filling is bubbly.
Let stand 5 minutes before serving.
Garnish with cilantro, chile pepper and sour cream.