Cheesy Tuna Casserole

Instructions

1. Step 1: Preheat oven to 350°F (180°C)
2. Step 2: Cook macaroni according to package instructions until al dente, drain and set aside
3. Step 3: In a medium saucepan, melt butter over medium heat
4. Step 4: Add flour and whisk together to make a roux, cooking for 1 minute
5. Step 5: Slowly add milk, whisking constantly to avoid lumps
6. Step 6: Bring mixture to a simmer and cook until thickened, stirring occasionally
7. Step 7: Remove from heat and stir in cheddar and mozzarella cheese until melted and smooth
8. Step 8: Add cooked macaroni, tuna, salt, and pepper to the cheese sauce, stirring until well combined
9. Step 9: Transfer mixture to a 9x13 inch baking dish and top with additional grated cheese if desired
10. Step 10: Bake for 25-30 minutes, or until golden brown and heated through