In a skillet, brown meat; drain. Add tomatoes, corn, green chilies, and chili powder. Season to taste with salt and pepper. Pour into 2-1/2 -quart dutch oven. Prepare muffin mix according to package directions. Let batter stand for 5 minutes, then Spread evenly over meat mixture. Set onto campfire for 20 to 30 mins or until golden. NOTE: dip off and discard 3 TBLS. of liquid before spreading cornbread mix on top.
OPTIONAL: try mutton instead of beef. Also try adding in onions or even white hominy for that native American flair.