The Vegetarian 5-Ingredient Gourmet has a recipe for two onion pizza. We had yellow and red onions. Now, we absolutely love onion pizza provided it is made well and does not include a lot of skins. I knew we would already vote for this recipe so, I added some red and orange bell peppers. I loved how pretty it came out. Food has to look inviting to convince anyone to taste it. I used Classico Spaghetti Sauce on the bottom and topped the vegetables with Jarlsburg cheese.