Italian Meatballs with Penne Pasta and Roasted Green Beans

Ingredients

• 1 1/4 pounds ground beef (80/20 lean)
• 1 cup yellow onion, minced
• 5 cloves garlic, minced
• 1 large egg
• 1/2 cup panko breadcrumbs
• 2 teaspoons dried oregano
• 1 1/2 teaspoons kosher salt
• 3/4 teaspoon black pepper, freshly ground
• 3 tablespoons olive oil
• 1 (28 ounce) can crushed tomatoes
• 1 (14.5 ounce) can diced tomatoes
• 1 (6 ounce) can tomato paste
• 1 1/2 cups beef broth
• 1/2 teaspoon red pepper flakes
• 1 pound penne pasta
• 1 pound fresh green beans, trimmed
• 2 tablespoons chopped fresh parsley, for garnish