Caramelized Onion Tartlets

In large skillet, cook and stir onions, brown sugar and oil for 3 minutes. Add water; cook and stir until onions are tender and golden brown, about 5 minutes. Cool slightly. Meanwhile, in medium bowl, stir together eggs, milk, cheese, salt and pepper. Stir in onion mixture; set aside. Using a 3-inch round cookie cutter, cut pie crusts into rounds. Place in medium muffin cups, shaping to fit bottom and about 1/2-inch up the side of each cup. Spoon about 2 tablespoons onion mixture into each pie crust cup. Bake at 375°F (190°C) for 20 minutes or until knife inserted in center of tartlet comes out clean. Cool in muffin cups for 5 minutes; remove from pans. Serve warm or at room temperature.