If your crust of choice requires it, pre-bake the crust.
Preheat the oven to 400°F.
Prepare the butternut squash layer by stirring the squash puree together with the olive oil, salt and pepper in a small bowl. Set aside.
Prepare the onions and garlic by heating 1 tablespoon of olive oil in a medium-sized pan at medium-high heat. Add the onion and garlic, and sautee until lightly browned, about 5-7 minutes.
Use a spatula or spoon to spread the squash over the crust. Add the sauteed onion and garlic on top, then sprinkle the cheese over everything.
Bake for about 10 minutes, until the cheese is melted.
Remove the pizza from the oven and top with walnuts, drizzle the balsamic glaze on top, and sprinkle with salt and pepper. Slice and serve hot!
Recipe by The Colorful Kitchen at https://thecolorfulkitchen.com/2017/11/15/vegan-gluten-free-butternut-squash-pizza/