Beef with tortillas

1 tablespoon vegetable oil 1 onion, chopped 1 clove garlic, minced 4 tomatoes, chopped 2 cups chopped cooked roast beef 1 (8 ounce) jar prepared taco sauce 1[...]

1/2 pound 95% lean beef 1 chili pepper, deseeded and chopped 2 jalapeño peppers, deseeded and chopped 1 red bell pepper , chopped 2 cups diced tomato 1/4[...]