Mushroom Beef on a Bun

In large skillet, heat oil over medium-high heat; saut?nion, garlic, mushrooms, green pepper, salt and pepper until liquid is evaporated, about 6 minutes.

Add gravy; heat through. Add beef; reduce heat, cover and simmer for 10 minutes.

Meanwhile, halve buns; broil until golden, about 1 minute. Spoon beef mixture over bottoms; top with cheese. Broil until melted, about 1 minute. Top with remaining bun halves.

Additional information :

Tip: If you don't have leftover beef and gravy, you can make this with 1 lb (500 g) thinly sliced deli roast beef. For gravy, bring 1/2 cup (125 mL) beef stock to boil. Whisk 2 tsp (10 mL) all-purpose flour with 1 tbsp (15 mL) water; whisk into stock along with 1 tsp (5 mL) tomato paste; cook, whisking, until thickened, about 2 minutes.

Source : Canadian Living Magazine: March 2005