Preheat oven to 400°. Place sweet potatoes in a greased 15x10x1-in. baking pan; toss with 2 tablespoons oil, herbes de Provence, 1/2 teaspoon salt and 1/4 teaspoon pepper. Roast for 25-30 minutes or until tender, stirring once. Cool slightly., In a small skillet, heat remaining oil over medium-high heat. Add shallots and garlic; cook and stir until tender. Transfer to a food processor. Add sweet potatoes, ricotta cheese, hazelnut liqueur, nutmeg and remaining salt and pepper; process until blended., Place 1 tablespoon filling in center of each wonton wrapper. (Cover remaining wrappers with a damp paper towel until ready to use.) Moisten wrapper edges with water. Fold 1 corner diagonally over filling to form a triangle; press edges to seal. Pull opposite corners together, forming a boat; moisten with water and pinch to seal., In a Dutch oven, bring water to a boil. Reduce heat to a gentle boil. Cook tortellini in batches 30-60 seconds or until they float. Remove with a slotted spoon; keep warm., In a small heavy saucepan, melt butter over medium heat. Add sage; heat for 5-7 minutes or until butter is golden brown, stirring constantly. Remove from heat; stir in cherries and hazelnuts. Serve with tortellini. Top with cheese.