Freshly cracked black pepper
Kosher salt
1/4 cup Coarsely chopped fresh basil, plus more for garnish
3 tbsp. Butter, melted
1/2 cup Whole milk
1/2 cup Heavy cream
6 Large eggs
1/2 cup Freshly grated Parmesan
2 cups Jarred marinara
1 pound Spaghetti
1 tbsp. Butter, plus more for baking dish