Sweet Onion Casserole

Heat oven to 350°F. Spray 11x7-inch (2-quart) glass baking dish with cooking spray. Cook rice in water as directed on package.

Meanwhile, in 12-inch skillet, heat oil over medium-high heat. Cook onions in oil 6 minutes, stirring occasionally, until tender. Sprinkle flour and salt over onions; stir until blended. Cook 1 minute, stirring constantly.

Gradually add milk, stirring with whisk until blended. Cook 3 minutes, stirring frequently, until mixture is thickened. Add cooked rice and Gruyère cheese; stir until cheese is melted. Spoon mixture into baking dish. Sprinkle with Parmesan cheese.

Bake uncovered 35 minutes or until bubbly and golden brown. Sprinkle with parsley.