1 c. buttermilk baking mix
2 tbsp. instant minced onion
1/3 c. milk
1/4 tsp. prepared mustard
1 tbsp. sesame seed
1/2 c. cooked ham, chopped
1 egg
1 tbsp. salad oil
1 c. shredded Cheddar cheese

Heat oven to 350 degrees. Grease a 1-quart casserole. Mix baking mix, ham, onion, egg, milk, oil, mustard and 2/3 cup cheese. Spread in casserole. Sprinkle remaining cheese and the sesame seed on top. Bake until top is golden brown for 30 to 35 minutes. Serve warm.