This is another perfect appetizer for Thanksgiving, or anytime really. The flavor is wonderful, and the onions and mustard go together remarkably well. While this was tasty many hours later, I prefer to eat it warm from the oven!
To save time, you can make this recipe using a store bought pizza crust, or you can purchase pizza dough from a local pizza shop. I made my own dough using this easy recipe. Onion Tart w/ Mustard and Fennel
find the recipe here