1/2 lb. Pappardelle's Calabrian Chile & Honey Pappardelle
3 Tbsp. extra-virgin olive oil, divided
1 lb. shrimp, peeled & deveined
½ tsp. salt
¼ tsp. black pepper
1 small red onion, diced
4 cloves garlic, minced
1 tsp. crushed red pepper flakes
3 cups tomato sauce
¼ cup fresh basil, roughly chopped, plus more for serving