Shrimp-and-Herb Risotto

INGREDIENTS

2 tbsp

unsalted butter, divided

small yellow onion, finely chopped

2 cloves

garlic, minced

1 1/2 cups

Arborio or Carnaroli rice

4 cups

chicken broth, divided

Salt and pepper

1 lb

large shrimp (31 to 35), peeled and deveined

1/2 cup

grated Parmesan (2 ounces)

3 tbsp

chopped fresh parsley, plus more for serving

3 tbsp

chopped fresh basil leaves, plus more for serving