Yield: 6 servings
| Measure | Ingredient |
|---|---|
| 1½ pounds | Ground beef |
| ¼ cup | Dry bread crumbs |
| 1 \N | Small onion,finely chopped |
| 1 \N | Egg |
| 1 teaspoon | Salt |
| 1 teaspoon | Worcestershire sauce |
| ¼ teaspoon | Pepper |
| ¼ cup | Shredded American cheese |
| ¼ cup | Shredded Cheddar cheese |
| 2 tablespoons | Mayonnaise |
| 1 teaspoon | Worcestershire sauce |
| ½ teaspoon | Salt |
| ½ teaspoon | Prepared mustard |
| ¼ teaspoon | Pepper |
PEPPY CHEESE FILLING
Mix all ingredients except fillings. Shape mixture into 12 thin patties, about 3½ inches in diameter. Top each of 6 patties with a filling, spreading to within ½ inch of edge. Cover with a remaining patty, seating edges firmly. Broil or grill patties 4 inches from heat, turning once, to desired doneness, about 10 minutes.