Cheese Souffle/Soufflé au fromage

Assemble these supplies:

• 1 cup grated cheese
• 1 cup thick cream sauce as follows
• 3 to 4 tablespoons melted margarine
• 4 tablespoons flour 1/4 teaspoon salt
• 1 cup milk

Steps in preparation:

1. Melt butter in saucepan, add flour and salt, let bubble up together. 
2. Take off heat, add milk all at once; cook over low to medium heat, stirring constantly until thickened.