Step 1
Heat oven to 375 degrees and position an oven rack in upper third of oven. Use 1 tablespoon butter to grease a 9-inch round or square baking pan.
Step 2
In a blender, purée cottage cheese, milk, mustard, cayenne, nutmeg and salt and pepper. Reserve ¼ cup grated Cheddar for topping. In a large bowl, combine remaining grated Cheddar, milk mixture and uncooked pasta. Pour into prepared pan, cover tightly with foil and bake 30 minutes.
Step 3
Uncover pan, stir gently, sprinkle with reserved cheese and dot with remaining tablespoon butter. Bake, uncovered, 30 minutes more, until browned. Let cool at least 15 minutes before serving.
