Preheat oven to 400 degrees. Pulse the sweet potato and oats through the food processor until very fine. Add the egg, garlic powder, and salt; pulse again to mix. The mixture should resemble a loose dough or thick batter.

Transfer to a parchment-lined baking sheet or round pizza pan. Press into crusts and shape with your hands – you can make two smaller crusts or one larger crust. Crusts should be about 1/4 to 1/2 inch thick.

Bake for 25-30 minutes, until the top is dry to the touch. Remove from oven, let cool, and invert back onto the pan with the dry side facing down. Peel the parchment very gently off the top layer and brush with olive oil. Bake for another 5-10 minutes to get a crispy top.

Top with your favorite pizza toppings and return to the oven to melt cheese. Serve hot.