Alfredo Shrimp Scampi Dump Dinner

INGREDIENTS

4 tbsp

butter, cut into 1/2-inch cubes, plus more for the casserole dish

12 oz

rotini pasta

1 lb

frozen peeled and deveined medium shrimp

2 cups

chicken broth

1/4 tsp

red pepper flakes

2 cloves

garlic, minced

Zest of 1/2 lemon

Kosher salt and freshly ground black pepper

1/2 cup

grated Parmesan

1/3 cup

loosely packed fresh parsley, chopped

1/2 cup

heavy cream, warmed