My sister-in-law took one bite and came running over to me asking for the recipe

Spread the cream cheese mixture evenly over the noodles.
Add the remaining spaghetti noodles on top of the cream cheese mixture and place a few more slices of butter on them.
Pour the spaghetti and meat sauce over the noodles.
Place the casserole in the preheated oven and bake for 30 minutes.
After 30 minutes, sprinkle your desired amount of grated cheddar cheese on top and return the casserole to the oven for an additional 15 minutes to allow the cheese to melt.
Once the cheese is bubbly and golden, it’s time to dig in and enjoy!