-cheese In large mixing bowl, dissolve yeast in warm milk and water. Add butter, sugar, parsley flakes, salt, garlic powder, egg, and 1.5 cup flour. Blend half minute on low speed, scraping bowl constantly. Beat 3 minutes on high speed, scraping bowl occasionally. Stir in remaining flour and Cheddar cheese until smooth. Cover; let rice in warm place until double, about 40 minutes. (The dough may be refrigerated 2-24 hours before baking.) Heat oven to 350'F. Spread dough in well greased 30 cm pizza pan or 13x9 inch baking pan. Arrange SPAM on top of dough, pressing down slightly. Bake 25-30 minutes or until golden brown. Sprinkle Mozzarella and Parmesan cheeses over SPAM. Bake 5 minutes longer or until cheese is melted.