Preheat oven to 425°F.
Mix sweet potatoes, 1 tablespoon oil, 1/2 teaspoon salt and 1/4 teaspoon pepper in a large bowl. Spread on three-fourths of a large parchment-lined baking sheet.
Mix onion in the bowl with 1 teaspoon oil. Spread evenly on the remaining space on the baking sheet. Roast for 10 minutes 10 Minutes. Remove from the oven.
Reduce temperature to 375°.
Add olive oil to a skillet and sauté mushrooms* until they are fully cooked. If using dried wild mushrooms, hydrate them in boiling water for 5-10 minutes, then drain and sauté away!
Roll out the dough into a rectangle on a parchment-covered baking sheet. Leaving a 2-inch border, sprinkle cheese evenly over the crust. Next place sweet potato slices atop of the cheese, then sprinkle the onions and mushrooms on top (leaving the 2-inch border).
Pick up the edges of the crust using a spatula and fold slightly over the filling, making pleats in the dough if necessary; the filling will only be partially covered. Brush the crust with the egg-white wash. Drizzle the vegetables with the remaining 1 teaspoon oil and sprinkle with 1 teaspoon thyme and/or rosemary.
Bake the tart until lightly browned on the edges, about 30-40 minutes 30 Minutes . Cool for 10 minutes 10 Minutes before slicing.
Enjoy your delicious dinner of celebration, cheers!
0 servings