Aunt Lynn's Green Bean Casserole

Ingredients:

• 2 tablespoons butter
• 2 tablespoons all-purpose flour
• 1 teaspoon salt
• 1 teaspoon white sugar
• 1/4 cup onion diced
• 1 cup sour cream
• 3 14 1/2 ounce cans French style green beans drained
• 2 cups shredded cheddar cheese
• 1 can French-fried onions aka fried onion crisps
• 1 tablespoon butter melted
• 1 4 ounce can chopped water chestnuts
• 1/4 cup chopped pecans
• 1 4 ounce can chopped mushrooms

Steps:

• Preheat oven to 350 degrees 175 degrees C
• Melt 2 T butter in large skillet over medium heat
• Stir in flour until smooth and cook for one minute
• Stir in salt sugar onion water chestnuts pecans mushrooms and sour cream
• Add green beans and stir until coated
• Transfer mixture to a 2 1/2 quart casserole dish
• Spread cheese over top
• In a small bowl toss taste toppers and butter and sprinkle over the cheese
• Bake for 30 minutes or until top is golden brown and cheese is bubbly