Tuna Ranch Casserole - cooking recipe

Ingredients

8 ounces medium pasta shells
3/4 cup chopped yellow onion
2 cups frozen mixed vegetables
1/4 teaspoon pepper
2/3 cup bottled ranch salad dressing
1 (6 ounce) can tuna, drained
1 1/2 cups shredded sharp cheddar cheese, 5 oz

Preparation

Preheat oven to 375 degrees.
Cook pasta according to package directions. Drain, reserving 1/2 cup pasta water.
Coat large skillet with cooking spray; heat over medium heat. Add onion; cook 5 minutes. Add vegetables and pepper; cook 5 minutes.
Stir in dressing, tuna, reserved pasta, and water.
Remove from heat; stir in 1 cup cheese.
Transfer to 2-quart baking dish; sprinkle with remaining cheese.
Bake until golden, about 20 minutes.