One-pot pasta means easy cleanup on busy weeknights | America's Test Kitchen | Columns | ArcaMax Pub

Ingredients

• 1 pound ground sweet Italian sausage
• 1 small onion, peeled and chopped fine
• 3/4 teaspoon salt
• 1/4 teaspoon pepper
• 1/8 to 1/4 teaspoon red pepper flakes (optional)
• 1/2 cup plus 3 1/2 cups chicken broth, measured separately
• 4 1/2 cups medium pasta shells (12 ounces)
• 2 cups frozen peas
• 1/2 cup grated Parmesan cheese (1 ounce), plus extra for serving
• 2 teaspoons grated lemon zest plus 1 tablespoon lemon juice, zested and squeezed from 1 lemon