Million dollar spaghetti

Million dollar spaghetti 1 lb Spaghetti noodles(cooked) Ground beef and italian sausage or one or the other(cooked and drained) 2 cans or jars of spaghetti sauce (I use 1 1/2 jars) Mix together 1 8 oz container cottage cheese 1 8 oz pkg cream cheese And 8 oz cheddar cheese 1/4 c. sour cream Mix spaghetti and meat and sauce in casserole dish top with cheese mixture and bake 350,till hot and bubbly about 30 min