Make the Sauce: In the same pan, add flour to the remaining butter and garlic to create a roux. Gradually whisk in milk and cream until smooth. Season with salt and pepper to taste.
Assemble the Lasagna: In a baking dish, layer lasagna noodles, the creamy sauce, shrimp, and cheeses. Repeat the layers until all ingredients are used, finishing with a top layer of cheese.
Bake: Bake in a preheated oven at 375°F (190°C) for 25-30 minutes, or until the lasagna is bubbly and golden on top.
Serve: Let the lasagna cool slightly before slicing. Garnish with fresh parsley or basil and serve.
Notes
For extra flavor, you can add a pinch of red pepper flakes to the sauce for a little heat.
Make sure the lasagna noodles are cooked al dente, as they will continue to cook while baking.
This dish pairs wonderfully with a light salad or steamed vegetables.