Cattle Drive Casserole

Name: Cattle Drive Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 1 1/2 lbs ground beef; 3/4 cup onion, diced; 1 bell pepper, diced; 1 taco seasoning packet; 1/2 cup sour cream; 1/2 cup mayonnaise; 1 cup cheddar cheese, shredded & divided; 1 sm. can (4 oz) diced green chilies; 1 (10 oz) can Rotel diced tomatoes with green chilies; 2 cups Bisquick; 1 1/4 cup water, divided