Easy Beef Fajitas

2 red bell peppers or 2 green bell peppers , cut into strips (or one each) 1 small onion , sliced 3 cloves garlic , finely chopped 1 1/2 lbs lean beef sirloin[...]

1 cup onions sliced 1 cup mushrooms sliced 1 teaspoon safflower oil 1/3 cup sherry dry * 1 pound beef, sirloin tip fat trimmed 2 each serrano chiles jalapeno[...]

2 teaspoons lime juice 2 teaspoons water 1 garlic clove 1/2 teaspoon chili powder 1/2 teaspoon oregano 1/2 lb roast beef (use sandwich meat from the deli)[...]