I’ve been really inspired by leftovers lately. That whole idea of waste not, want not, makes a big difference on the weekly grocery bill too. This past Rosh Hashanah, I was “winging” it for the side dish. I knew it would be something with sweet potatoes, since I’d picked them up at the farmer’s market, but I didn’t really have a plan. That is until I saw the leeks at the market too. I started thinking about mashed sweet potatoes paired with some sautéed leeks. Then that morphed into a soufflé. When I got home and started unloading ingredients, and spied some leftover homemade ricotta I’d made earlier in the week, my side dish was finally complete—a sweet potato, leek and ricotta soufflé. —Jennifer Perillo
large sweet potatoes, roasted, peeled & flesh scooped out and pureed
Preheat oven to 350ºF. Grease the bottom and sides of a 9-inch ceramic or glass pie plate with butter; set aside.
Heat 2 tablespoons of butter in a skillet over medium heat. Add leeks and saute until tender and fragrant; set aside. Meanwhile, using the whisk attachment on your stand mixer, beat the egg white until stiff peaks form; set aside.
In a separate medium-sized bowl, mix the sweet potato puree, butter, ricotta, egg yolks and salt pepper together. Stir in leeks. Gently fold in egg whites. Spoon into prepared pie dish and bake for 1 hour, until puffed and golden. Serve immediately.
Jennifer Perillo is the Consulting Food Editor at Working Mother magazine, and a regular a contributor to Relish Magazine and FoodNetwork.com. She shares stories about food, family and life at her blog In Jennie's Kitchen and in her debut cookbook, Homemade with Love: Simple Scratch Cooking from In Jennie's Kitchen (Running Press 2013).