In a medium skillet over medium high heat, add 1 tsp oil, onions, cook 1 min. Add peppers and garlic, cook1 min. Add mushrooms, cook 1 min. Remove vegetable from pan. Add remaining oil and meat. Cook until meat is no longer pink about 2 min. Meanwhile, mix hunter sauce mix in 2 Tbsp water. Return vegetables to pan. Add sauce, bring to boil, then rduce heat to simmer for 5 min.