Preheat oven to 400. Grease pie plate, 10x1 1/2" Sprinkle ham, cheese and onion in pie plate. Beat remaining ingred. 15 sec. In blender on high speed.
Pour into pie plate. Bake 35-40 min. Or til knife comes out clean. Cool 5 min. Variation; Substitute 2 c. Fully cooked smoked ham for the bacon, cut-up. 1/2 Recipe: Use 1 qt square or round casserole. Decrease onion to 2 tb. Divide remaining ingred. Amts in half. Decrease beat time to 10 sec. High Alt: Bake about 45 min. For 1/2 recipe: use 1 1/2 qt round or 1 qt square casserole. Bake 30-40 min.