Instructions: In large mixing bowl, dissolve yeast in warm milk and water. Add butter, sugar, parsley flakes, salt, garlic powder, egg, and 1 1/2 cups flour. Blend 1/2 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 rise in warm place until double, about 40 minutes. (The dough may be refrigerated 2 to 24 hours before baking.)

Heat oven to 350 degrees.

Spread dough in well-greased 12-inch pizza pan or a 13- by 9-inch baking pan. Arrange Spam on top of dough, pressing down slightly. Bake 25 to 30 minutes or until golden brown. Sprinkle Mozzarella and Parmesan cheeses over Spam. Bake 5 minutes longer or until cheese is melted.

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