Step 1

Preheat oven to 350 degrees F. Grease a 1 ½ quart casserole dish; set aside.

Step 2

Cook the noodles in a large pot of salted boiling water according to package directions, just until al dente (about 5-6 minutes). Drain.

Step 3

In a large bowl, whisk together condensed soup and milk. Gently stir in the cooked noodles, tuna and peas (if using). Taste and season with salt and pepper, if necessary. Transfer mixture to prepared dish.

Step 4

Sprinkle cheese on top, then crushed potato chips.

Step 5

Bake for 20-25 minutes, or until top is golden brown and inside is hot and bubbly.