This is a great way to use up leftover pesto sauce. In this video, Chef John shows you how to make a delicious pizza with pesto, red onions, feta, Parmesan, potato slices, and fontina cheeses. Then it’s just 15 minutes in a hot oven. The crust comes out crispy and delicious. It’s a tasty alternative to tomato-sauce pizza. Watch the video, then get the recipe for Chef John's Potato Pesto and Feta Pizza.