Kraft Mac and Cheese Tuna Casserole

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Spray a 9×13-inch baking dish with nonstick spray.

Step 2
Bring 6 cups water to a boil in a medium saucepan. Stir in macaroni from the box and cook for 7 minutes. Drain macaroni, then rinse under cold water and drain again. Set cheese sauce packet aside.

Step 3
Melt butter in the same saucepan over medium heat. Add milk and cheese sauce packet; mix well. Stir in condensed soup and cook until heated through, about 3 minutes.

Step 4
Combine drained macaroni, peas, and tuna in a bowl. Fold in the cheesy soup mixture. Pour mixture into the prepared baking dish.

Step 5
Bake in the preheated oven for 30 minutes. Sprinkle with Cheddar cheese, then sprinkle French-fried onions over top. Bake until onions are brown and cheese is melted, another 5 minutes.