Vegetarian BBQ Pizza

This is a super simple recipe that will leave your taste buds tingling.  If you are looking for a fast and easy way to impress your friends or feed your loved ones...this is it!  I prefer to cook mine on the grill, but you can use your oven or toaster oven.  
 
Ingredients:
Flat bread or pizza crust (pre made is perfect for this)
Uncle D's BBQ Sauce (Spicy, if you like)
1 can organic black beans, drained & rinsed
1 small onion, thinly sliced
1 Portobella mushroom, sliced
1 cup Mexican cheese blend, shredded
2 TBSP olive or coconut oil

Prepare your grill or preheat your oven to 400°F.  Next, heat your oil in a pan.  While it is warming, slice your veggies and rinse your beans.  Sauté the onion until translucent.  Add mushrooms and continue to cook an additional 3-5 minutes.  Place the flatbread/crust on your grill and toast one side until golden brown.  Flip the crust and evenly coat the crust with your desired amount of sauce.  Add all veggies, and top with cheese. Cover your grill with a lid until the cheese is nicely melted.  If you are using an oven, cook for approximately 8 minutes, checking to make sure it does not burn.