Preheat oven to 425 degrees F. Line a 9" cake pan with parchment paper and drizzle one tablespoon of oil in the center. Spread around with your hands until evenly coated and set pan aside.
Prepare the pizza crust according to the instructions. Start by thoroughly rinsing the quinoa, then adding it to a blender with the remaining ingredients, and blending it on high until smooth and creamy.
Pour batter into prepared pan and bake for 15 minutes. Remove, flip and return to oven baking for another 10 - 15 minutes until browned and edges are crispy.
While baking the second time, preheat a skillet over medium heat and gently saute the broccoli and mushrooms until the mushrooms are tender, but the broccoli is still a bit crunchy, about 5 minutes. Remove and let cool until pizza is done baking.
Remove crust from the oven and top with sauce, cheese and veggies. Bake for 12 - 15 minutes until cheese has melted and broccoli is starting to brown.
Remove, let cool for a few minutes in the pan, transfer cutting board and slice.
Garnish with herbs, pepper flakes, grated cheese, etc., and serve immediately!