Instructions

  1. Preheat oven to 350°F Grease a 13x9-inch baking dish; set aside.
  2. Boil spaghetti noodles to al dente according to package; drain.
  3. While spaghetti is boiling, brown the ground beef with the onion; drain and return to skillet. Add the spaghetti sauce to the meat in the skillet.
  4. Add the hot cooked, drained spaghetti to the skillet; stir well. Add salt and pepper to taste. Pour into the prepared baking dish.
  5. In a saucepan, melt butter; add the flour, stirring constantly to make a roux. Slowly whisk in the evaporated milk.
  6. Turn heat to low and stir in the parmesan cheese and 1/2 cup only of the mozzarella. stir constantly until melted and smooth.
  7. Pour the cheese mixture evenly over the spaghetti in the 13 x 9 dish.
  8. Sprinkle with the remaining 1 cup of parmesan cheese and then the oregano.
  9. Bake; uncovered, for 30-35 minutes or until bubbly and starting to brown on top.