DIRECTIONS
Melt butter in a saucepan over medium heat.
Whisk in flour and cook for 2 minutes.
Gradually whisk in chicken stock.
Reduce heat to low and cook and stir until thick enough to coat the back of a spoon, 4-6 minutes.
Stir in heavy cream, and season with salt, pepper, and cayenne pepper.
Serve the casserole with gravy over the top and a big side of mashed potatoes.
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