Makes: 12 servings at 61¢ each.
Heat oven to 400 degrees F. Grease 15 x 10 x 1-inch baking pan. Stir egg, mix and milk in bowl. With damp fingers, pat in pan.
Bake in 400 degrees F oven 10 minutes or until edges are lightly browned.
Cook beef in skillet, breaking up chunks, 8 to 10 minutes, until no longer pink. Add seasoning mix and 3/4 cup salsa. Simmer, uncovered, 10 minutes.
Spread beans over corn bread. Sprinkle with 1/2 cup Jack cheese. Bake to melt cheese, 2 minutes. Top with beef, remaining cheese. Bake to melt cheese, 2 minutes. Spread with sour cream. Top with lettuce, scallion, remaining salsa.