Shrimp Fra Diavolo

INGREDIENTS

• 3 tablespoon chopped fresh Italian parsley leaves
• 1/4 teaspoon dried oregano leaves
• 3 tablespoons olive oil, plus 1 to 2 tablespoons
• 1 pound large shrimp, peeled, deveined
• 1 (14 1/2-ounce) can diced tomatoes
• 1 medium onion, sliced
• 3 garlic cloves, chopped
• 3 tablespoon chopped fresh basil leaves
• 1 cup dry white wine
• 1 teaspoon salt, plus additional as needed
• 1 teaspoon dried crushed red pepper flakes