In large skillet heat butter and oil over medium heat until butter melts. Add onions and sugar; cook, uncovered, for 15 to 20 minutes or until onions are golden, stirring occasionally.
Meanwhile, grease a large cookie sheet; unroll pizza dough onto cookie sheet. Press dough to 15x10-inch rectangle. Sprinkle mozzarella cheese over dough. Combine ricotta cheese, Parmesan cheese, and white pepper. Carefully spread over mozzarella cheese. Bake in a 450 degree F oven for 8 to 10 minutes or until crust is golden.
Top with onions, tomatoes, and parsley. Makes 20 appetizer servings.
1/2 starch, 1 vegetable, 1 medium-fat meat.