Preheat the Oven:

• Preheat your oven to 350°F (175°C). Boil the spaghetti noodles until al dente (firm but not hard). Drain and set aside.
  Prepare the Cheese Mixture:
• In a mixing bowl, combine the cream cheese, sour cream, and cottage cheese until well blended. Set aside.
  

  Cook the Ground Beef:

• Brown the ground beef in a skillet over medium heat. Once cooked, drain the excess fat. Combine the cooked beef with the jar of spaghetti sauce, stirring well.
  

  Assemble the Casserole:

• Place a few slices of butter into the bottom of a 9×13-inch baking dish. Add half of the cooked spaghetti noodles on top.
• Spread the cream cheese mixture evenly over the noodles.
• Add the remaining spaghetti noodles on top of the cheese mixture. Place a few more slices of butter on top.
  

  Add the Meat Sauce:

• Pour the spaghetti and meat sauce mixture over the noodles, spreading it out evenly.
  

  Bake the Casserole:

• Bake the assembled casserole in the preheated oven for 30 minutes.
  

  Add the Cheese Topping:

• After 30 minutes, remove the casserole from the oven. Sprinkle grated cheddar cheese on top, then return it to the oven for an additional 15 minutes, or until the cheese is melted and bubbly.
  

  Serve and Enjoy:

• Once the cheese is melted and golden, remove the casserole from the oven. Allow it to cool for a few minutes before serving. Enjoy your delicious Million Dollar Spaghetti Casserole!