Orzo: Creamy Meatballs, Peas & Parmesan

Ingredients

• 1-1/2 tablespoons olive oil
• 1-1/2 cups finely diced yellow onion (1 large onion)
• 19 ounces Italian sausage
• Fine sea salt & pepper
• 1 bag (12 oz.) frozen peas
• 1 tablespoon minced garlic
• 2 tablespoons each: unsalted butter and white flour
• 2 cups chicken stock/broth
• 2-1/4 cups whole milk
• 1 tablespoon Italian seasoning
• 1/2 teaspoon each: onion & garlic powder
• 1-1/2 cups dry orzo pasta
• 1 cup Parmesan cheese freshly grated, divided
• Optional: fresh parsley, lemon (for serving)