Preheat oven to 350° F and grease a 1 1/2 quart baking dish.
Bring the water, salt and pasta to a rolling boil in a medium saucepan. Cook just until tender. Drain pasta, put into prepared baking dish and set aside. Meanwhile prepare the sauce. In a saucepan over medium-low heat, melt 2 tablespoons of butter. While whisking, gradually add the flour. Whisk for about 2 minutes or until golden and bubbling. Very slowly add the milk, whisking constantly to avoid developing lumps. Simmer for 15 minutes until thickened, stirring often to prevent mixture from burning. Remove from heat and stir in Cougar Gold® and black pepper to taste. Pour sauce onto cooked pasta (do not stir). Melt 1 tablespoon butter and toss with breadcrumbs. Sprinkle on top of casserole and bake for 30 minutes or until the crumbs are golden.