Penne with Creamy Tuna Sauce - Creamette

Ingredients

• 12 oz Creamette® Penne Rigate
• 2 tbsp butter
• 0.50 cup onion, chopped
• 1 (10 3/4 oz.) condensed cream of mushroom soup
• 1.25 cups milk
• 1.50 cups frozen peas, thawed
• 2 (5 oz.) tuna, drained and flaked