Preheat your oven to 400 degrees F. Line a baking sheet with parchment paper or a Sil-Pat.
Place the cubed sweet potatoes in a large mixing bowl. Drizzle with 1 tablespoon oil and sprinkle with 1/4 teaspoon salt and 1/8 teaspoon pepper. Toss to coat the potatoes.
Pour the potatoes onto the prepared baking sheet and spread into and even layer.
Bake for 30 to 40 minutes or until fork tender.
Remove from the oven.
Transfer the sweet potatoes to a food processor or blender. Add the garlic cloves, maple syrup, and a little more salt and pepper to the potatoes.
Cover and puree until smooth. Drizzle in water as needed to thin our the sauce to your desired consistency. (I used about 1/4 cup water.) Scrape the sides of your food processor as needed with a rubber spatula.
Set aside when finished.
Pizza:
Turn your oven's heat up to 475 degrees F. If using a pizza stone, place it in the oven to preheat.
Roll out your pizza dough on a floured surface to a 12-inch circle. Transfer the dough to your preheated pizza stone (in the oven - be careful!) or a baking sheet lined with parchment paper.
Bake the dough for 8 minutes.
Carefully remove the pizza crust from the oven.
Spread the sweet potato sauce over the pizza crust to within 1/2-inch of the edge.
Top the sauce with chopped turkey, mozzarella, and onions, spreading each layer evenly all over the pizza.
Return to the oven and bake for another 10 to 15 minutes or until the cheese is melted and bubbly.
Remove from the oven.
Sprinkle the dried sage all over the top of the pizza (i rub it between my fingers to break it up really fine.) Cut the pizza into slices and serve immediately.
Notes
You can also use leftover roasted or mashed sweet potatoes from the night before as the sauce base.Sauce recipe adapted from Minimalist Baker.