Ingredients:
6 medium onions, sliced
1 cup diced celery
7 tablespoons butter, divided
1/4 cup flour
salt and pepper
1 1/2 cups half-and-half
1/3-1/2 cup parmesan cheese, grated
Directions:
Set oven to 350 degree (oven rack to second-lowest position).
Butter a 2-quart casserole dish.
In a large skillet saute onions and celery in 3 tablespoons butter until softened and tender; remove to a bowl.
In a saucepan melt remaining 4 tablespoons butter and stir in flour, salt and pepper until smooth.
Gradually whisk in half and half cream; bring to a light boil, simmer for about 2 minutes whisking continuously until thickened.
Pour over the onions/celery mixture; toss to coat.
Transfer to prepared baking dish.
Sprinkle with Parmesan cheese.
Bake uncovered for about 20-25 minutes.
Servings: 4-6
Time preparation: 20 min.
Time total: 45 min.