Boil the pasta and drain it.

In a pan, melt the butter cubes, then add the shrimp with garlic and the mentioned spices. Sauté for 10 minutes, then turn off the heat.

In a pot, melt the butter, then add the flour and stir until it becomes a smooth mixture. Add the quart of milk and stir until you get the desired consistency, then add the spices mentioned for the sauce.

In a baking dish, layer the white sauce, then pasta, then shrimp, and repeat with the remaining pasta, sauce, and shrimp.