This low-fat Tex-Mex recipe calls for bottled picante sauce, which is a less chunky salsa. For a twist, substitute salsa verde, a green salsa made with tomatillos and chile peppers.
In a large skillet combine onion, sweet pepper, undrained tomatoes, picante sauce, cumin, and garlic. Bring to boiling; reduce heat. Simmer, uncovered, for 10 minutes. Stir in beans.
Spread one-third of the bean mixture over the bottom of a 3-quart rectangular baking dish. Top with six of the tortillas, overlapping as necessary, and 1 cup of the cheese. Add another one-third of the bean mixture; top with remaining 6 tortillas and remaining bean mixture. Sprinkle with remaining cheese.
Bake, covered, in a 350° oven for 30 to 35 minutes or until heated through. Let stand 10 minutes. Before serving, if desired, top with tomatoes and cilantro, green onions and/or olives. If you like, serve with sour cream.