Beef Tips with sirloin

3 lbs sirloin tip steaks , cut into 1-inch cubes 1/3 cup all-purpose flour 5 tablespoons olive oil , divided 1 large yellow onion , chopped 1 green bell[...]

2 cups beef, sirloin steak cubed, trimmed, of all visable fat * 2 teaspoons olive oil 1 medium yellow onion chopped 2 cups mushrooms sliced 1 clove garlic[...]