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December 16, 2025

Winter Buffalo Casserole

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Winter Buffalo Casserole–Instant Pot pasta bake with tender chicken, penne, sweet butternut squash spirals, buffalo sauce and ranch seasoning, all melted together with cream cheese and Italian blend cheese for a creamy and slightly spicy dinner.

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Winter Buffalo Casserole

Winter Buffalo Casserole

Why “Winter Buffalo Casserole”? The butternut squash is a total fall/winter thing, and it’s honestly genius in here. It adds this little bit of sweetness and you’re getting veggies without even trying. Win-win. The whole vibe is just warm and cozy and perfect for when you’re freezing this winter. It’s a dump and go dinner which is always my favorite. It’s like buffalo dip meets mac and cheese meets butternut squash.

Ingredients/Substitution Ideas

  • Chicken Broth–or water and Better than Bouillon chicken base
  • Penne–or cavatappi or bowtie pasta
  • Chicken Tenderloins–or boneless skinless chicken breasts or thighs cut into 1 inch cubes
  • Kosher Salt
  • Pepper
  • Garlic Powder
  • Onion Powder
  • Frozen Butternut Squash Veggie Spirals–or cubed butternut squash
  • Buffalo Sauce–or hot sauce mixed with melted butter
  • Dry Ranch Dressing Mix–I use Hidden Valley brand, big container from Costco
  • Cream Cheese–or Neufchâtel cheese
  • Shredded Italian Style Blend Cheese–or mozzarella and parmesan
  • Diced Green Onion–or chopped chives

Steps

Pour broth into Instant Pot. Sprinkle in the penne. Place chicken evenly on top. Sprinkle the chicken with salt, pepper, garlic powder and onion powder. Add butternut squash on top, drizzle the buffalo sauce on top, sprinkle the ranch dressing mix on top. Add in the cream cheese.

Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set manual/pressure cook button to 4 minutes. When time is up let pot sit for 5-10 minutes and then move valve to venting. Remove the lid.

Stir in the cheese. 

Scoop onto plates and top with green onions. 

Winter Buffalo Casserole

Notes/Tips

  • Serve with a green salad.
  • Swap buffalo sauce for mild wing sauce if you want less heat.
  • Add cooked bacon crumbles if you want a buffalo-chicken-dip feel.
  • Try swapping the butternut squash for cauliflower florets.
  • I used my 4 quart Instant Pot*. You can also make this in a 6 or 8 quart pot.
  • Store leftovers in an airtight container* in the refrigerator for up to 4 days or in the freezer for up to 3 months.
  • Other recipes you can make with ranch dressing mix are Instant Pot Mashed Ranch Cauliflower and Instant Pot Crack Chicken Pierogi.
Did you know you can filter the recipes on my website to search by meat type, IP or Crockpot, low carb, gluten free, etc.? Use the filter to find exactly what you are looking for. 

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Winter Buffalo Casserole
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Winter Buffalo Casserole


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4 from 1 review

  • Author: 365 Days of Slow and Pressure Cooking
  • Prep Time: 20 minutes
  • Cook Time: 4 minutes (plus 10 minute NPR)
  • Total Time: 24 minutes
  • Yield: 4–6 servings 1x
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Description

Instant Pot pasta bake with tender chicken, penne, sweet butternut squash spirals, buffalo sauce and ranch seasoning, all melted together with cream cheese and Italian blend cheese for a creamy and slightly spicy dinner.


Ingredients

Scale
  • 1 1/2 cups chicken broth
  • 6 oz penne
  • 16 oz chicken tenderloins (frozen or fresh)
  • 1/2 tsp kosher salt
  • 1/2 tsp pepper
  • 1/2 tsp garlic powder
  • 1/2 tsp onion powder
  • 1 (12 oz) package frozen butternut squash veggie spirals
  • 1/4 cup buffalo sauce
  • 2 Tbsp dry ranch dressing mix
  • 4 oz cream cheese
  • 1 cup shredded Italian style blend cheese
  • Diced green onion, for topping

Instructions

  1. Pour broth into Instant Pot. Sprinkle in the penne. Place chicken evenly on top. Sprinkle the chicken with salt, pepper, garlic powder and onion powder. Add butternut squash on top, drizzle the buffalo sauce on top, sprinkle the ranch dressing mix on top. Add in the cream cheese.
  2. Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set manual/pressure cook button to 4 minutes. When time is up let pot sit for 5-10 minutes and then move valve to venting. Remove the lid.
  3. Stir in the cheese. 
  4. Scoop onto plates and top with green onions. 
  • Category: Chicken
  • Method: Instant Pot

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*Karen Petersen is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

3 Comments Filed Under: All Recipes, Chicken, Dump and Go, Instant Pot, Pasta

Comments

  1. Kevin says

    December 17, 2025 at 7:39 pm

    any substitutes for the squash spirals if i can’t find them?

    Reply
    • Karen says

      December 18, 2025 at 5:16 pm

      Can you find cubed butternut squash? You can also use a bag of frozen cauliflower.

      Reply
      • Kevin says

        December 20, 2025 at 10:34 am

        Thanks, I will try looking for it
        I;m sure I could just leave it out and it would still be delicious

        Reply

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Hi, I’m Karen. I know that dinner time can be less than relaxing. Busy schedules and cranky kids and a hundred other things can lead to weariness when it comes to putting dinner on the table. I can help! I make homemade, family-friendly slow cooker and Instant Pot dinners and share the recipes with you.

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