1 (7 oz.) can tuna, drained
2 tbsp. grated onion
1/4 c. mayonnaise
1 tsp. lemon juice
1/2 tsp. Worcestershire sauce
1/2 tsp. salt
1/4 lb. cubed Velveeta cheese

Mix together well and place in buns. Wrap tightly in foil and bake at 350 degrees for 20 minutes.