In a large bowl, combine the cottage cheese, chives and onions; set aside. In a large bowl, whisk the eggs, milk, salt and pepper. In a large skillet, heat butter until hot. Add egg mixture; cook and stir over medium heat until eggs are completely set. Remove from heat; set aside.
In a greased 13-in. x 9-in. baking dish, place four lasagna noodles. Top with 2 cups hash browns, scrambled eggs, sausage and half of cottage cheese mixture. Cover with Monterey Jack cheese. Repeat layers with the remaining lasagna noodles, hash browns and cottage cheese mixture. Top with Muenster cheese.
Cover and refrigerate for 8 hours or overnight. Remove from the refrigerator 30 minutes before baking. Bake, uncovered, at 350° for 35-40 minutes or until a knife inserted near the center comes out clean. Let stand for 5 minutes before cutting. Yield: 12-16 servings.