Creamy Spinach Casserole - cooking recipe

Ingredients

1 (10.75 ounce) can condensed cream of celery soup
1 tablespoon all-purpose flour
4 tablespoons butter
1/2 teaspoon garlic salt
salt and pepper to taste
2 (10 ounce) packages frozen chopped spinach, thawed and drained
1 onion, finely diced

Preparation

In a saucepan, combine celery soup, flour, butter or margarine, garlic salt, salt and pepper, spinach and onion. Whisk together and cook over medium heat until hot and thick.