Sweet Potato-Walnut Burritos

Combine the lentils or split peas with 1-1/2 cups water in a saucepan. Bring to a boil, then simmer, covered, until tender, about 25 minutes for lentils and 1 hour or more for split peas. Drain any excess water and set aside. Heat the oil in a large skillet; add the onion and saute until the onion softens, about five minutes. Stir in the garlic and the spices and cook about five minutes more, stirring occasionally. Remove from heat and add the lentils or split peas, half the cheese, sweet potatoes, walnuts and 3/4-cup tomatoes and mix well. Preheat the oven to 350F and lightly oil a 9x13-inch baking dish. Fill each tortilla with about 1/8th of the filling, roll tightly and place in baking dish, seam side down. Cover pan with foil and bake about 30 minutes. Remove the foil from the pan and cover the burritos with remaining crushed tomatoes or salsa of choice. Sprinkle with the remaining cheese and bake an additional 5-10 minutes, or until cheese is melted and beginning to brown.