1 lb. ground beef
2 tbsp. prepared mustard
1/2 tsp. salt
1/2 tsp. seasoning salt
1/4 tsp. pepper
1 can refrigerated crescent rolls
2 tbsp. catsup
1 egg, beaten

Combine mustard, beef and dry seasonings. Make 4 oval burgers about 1-inch thick. Brown in skillet on both sides. Drain. Cover each burger with a rectangle of rolls (2 triangle rolls together). brush inside of covering with catsup, outside with egg. Bake at 375 degrees for 15-20 minutes.