Grandma's Best Casserole

By Mr. Food

Grandma's Best Casserole


One of our Test Kitchen team members always raves about how much she loved going to her Grandmother’s home for Sunday Dinner. A favorite dish was always a creamy chicken and pasta casserole. So in honor of Grandmas everywhere, enjoy this memory-making Grandma’s Best Casserole soon.

Serves: 6

Cooking Time: 45 min

What You'll Need:
  • 1 (1-pound) package spaghetti
  • 4 tablespoons butter
  • 1 onion, chopped
  • 1 red bell pepper, cut into 1/2-inch chunks
  • 1 (8-ounce) package fresh mushrooms, sliced
  • 1 1/2 pounds cooked chicken, cut into 1-inch chunks
  • 2 cups chicken broth
  • 2 (10-3/4-ounce) cans condensed cheese soup
  • 8 ounces bacon, cooked and crumbled


  1. Cook spaghetti according to package directions; drain, return to pot, and set aside.
  2. Meanwhile, in a large skillet over medium-high heat, melt butter; sauté onion, bell pepper, and mushrooms 6 to 7 minutes, or until tender. Add  vegetable mixture and remaining ingredients to spaghetti; mix well.
  3. Preheat oven to 350 degrees F.  Coat a 9- x 13-inch casserole dish with cooking spray.
  4. Place mixture in prepared casserole dish, cover, and cook 25 to 30 minutes, or until heated through.  
  • Since we cook a lot of chicken recipes in our Test Kitchen, we always have leftovers that can be used in recipes like this. But you can also buy prepared chicken in your supermarket or you can make your own for this purpose -- whatever works best for you!
  • Casseroles are a favorite around here, both for their easiness and their comfort. Our Test Kitchen has a lot of great recipes for casseroles, so we're sharing some of our favorites: Amish Country Casserole and our Chicken Pot Pie Casserole, but check out our website for lots more!


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