Sweet Onion Pizza

1 TBSP BUTTER OR SALAD OIL
2 LARGE SPANISH OR VIDALIA ONIONS, thinly sliced
1 TBSP SUGAR
1 (10 OZ) READY MADE ROLLED PIZZA CRUST(tube type roll pizza)
1 CONTAINER(15 OZ) PART-SKIM RICOTTA CHEESE
1/3 CP GRATED PARMESAN CHEESE
1/2 CP (2 OZ) SHREDDED PART-SKIM MOZZARELLA CHEESE
1 OZ OIL-PACKED SUN-DRIED TOMATOES(drained and thinly sliced, optional)
1/4 CP PARSLEY FLAKES

Preheat oven to 450degrees. Grease a baking sheet. heat butter and oil in large skillet over medium-high heat. Add onions and sugar; saute' for 15 minutes, or until onions are caramelized, stirring frequently.
Meanwhile, roll out pizza crust dough on baking sheet. Press dough into a 15-x-10-inch rectangle. In a medium bowl, combine ricotta and Parmesan. Sprinkle mozzarella over dough; cover with ricotta mixture. Bake on bottom rack of oven for 15 to 20 minutes, or until crust is browned. Top with caramelized onions, sun-dried tomatioes(if using) and parsley.