INGREDIENTS
•
2
•
cups
•
milk
•
Kosher salt and black pepper
•
1
•
cup
•
instant polenta
•
2
•
ounces
•
Parmesan, grated (about 1/2 cup), plus more for serving
•
2
•
tablespoons
•
unsalted butter
•
1
•
pounds
•
sliced mushrooms (such as cremini and shiitake)
•
1
•
small shallot, chopped
•
1
•
sprig fresh thyme
•
1
•
24-ounce
•
jar marinara sauce