In a large skillet over medium heat, melt 2 tablespoons butter. Add halibut and thyme. Cook until fish flakes easily with a fork, about 10 minutes. Add garlic cook 1 minute longer. Remove and set aside.
Add the remaining butter to the skillet. Stir in flour and salt until smooth cook and stir until golden brown. Gradually add broth and cream. Bring to boil cook and stir for 2 minutes or until thickened.
In a greased 13x9 inch baking dish, layer half of the noodles, spinach, crabmeat, halibut, white sauce and cheese. Repeat the layers. Cover and bake at 350 for 20 minutes longer or until bubbly. Let stand 15 minutes before serving.
Taste of Home Slow cooker 2010
Recipe formatted with the Cook'n Meal Planning Software from DVO Enterprises.