Stuffed Crust Onion Pizza

Ingredients

• 1 16 to 20 oz pizza dough
• 6 onion(s), thinly sliced
• 2 tbsp Real California® butter
• 1 tsp beef stock, concentrated
• 1 6 oz can tomato, paste
• 6 tbsp water, hot
• 1 tbsp oregano, dried
• 1 tbsp vinegar, red wine
• 1/2 tsp sugar
• 1/4 tsp garlic, powder
• 1/4 tsp cayenne pepper, ground
• salt and pepper
• flour, all-purpose , for work surface
• 1 lb Real California® Mozzarella cheese, shredded, divided
• 1 lb Real California® Provolone cheese, sliced
• 1/2 lb Real California Alpine-style cheese, shredded
• 2 tbsp parsley, fresh, chopped