With two kinds of cheese and sour cream, you bet this is deluxe!

1-3/4 cups uncooked elbow macaroni
2 cups small-curd, or whipped cottage cheese
2 cups (8 oz.) shredded cheddar cheese
8 oz. sour cream
1 tsp. dried onion OR 1 Tbsp. minced onion
1 large egg, beaten
1 tsp. kosher salt

1/4 cup fine flavored breadcrumbs
2 Tbs. melted butter

Lightly grease a 2 quart or 9x 9 pan. Preheat oven to 350 and cook the macaroni per package instructions; drain.  Into a large bowl, combine everything else up to the breadcrumbs and mix well with the macaroni.  Spread into the pan.  Mix breadcrumbs and butter together, sprinkle on top of casserole and place uncovered in the oven for about 35 minutes.