Good-Cooking - Barbecue Beef Stew

Ingredients

• 2 pounds stew meat
• 3 tablespoons vegetable oil
• 1 onion, sliced
• 1/2 cup chopped green bell pepper
• 1 large clove garlic, minced
• 1/2 teaspoon salt
• 1/8 teaspoon pepper
• 2 cups beef stock
• 1 (16 ounce) can tomatoes
• 1 (4 ounce) can mushrooms
• 1/3 cup barbecue sauce
• 3 tablespoons cornstarch
• 1/4 cup cold water