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February 15, 2025

Enemy Casserole

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Enemy Casserole–a twist on ham tetrazzini made in the Instant Pot. An easy recipe with noodles, ham, mushrooms, celery, kale, cheddar and more.

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Enemy Casserole

Enemy Casserole

This is so good even your enemies will want to eat with you lol. It’s a creamy pasta dish with ham cubes, mushrooms, celery, thick egg noodles, kale and cheddar. It’s just comfort food to the max with lots of flavor. With the Instant Pot you can make this meal all in one pot with no babysitting. The thick egg noodles are a fun addition and you can find them in your grocery store next to the frozen breads. The Ream’s brand and the Grandma’s brand will both work. Enjoy!

Ingredients/Substitution Ideas

  • Butter–or olive oil
  • Mushrooms
  • Onion
  • Celery
  • Kosher salt
  • Black pepper
  • Poultry seasoning
  • Garlic cloves
  • Chicken broth–or water and Better than Bouillon chicken base
  • Reams frozen noodles–find by the frozen bread dough at the grocery store
  • Ham cubes
  • White wine vinegar–or red wine vinegar
  • Cream cheese
  • Kale–or spinach (add in after pressure cooking time is up)
  • Cheddar–or parmesan

Steps

Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the mushrooms, onion, celery, salt, pepper and poultry seasoning. Saute for 4 minutes. Add in the garlic and saute for 30 seconds. 

Pour in the broth and scrape bottom of pot so that nothing is sticking. Turn off Instant Pot. 

Add in the frozen noodles, ham cubes, vinegar, cream cheese and kale. 

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

Sprinkle cheddar on top and let it melt. 

Serve and enjoy!

Instant Pot Ham Tetrazzini

Notes/Tips

  • Serve with a green salad.
  • Try swapping out the frozen noodles with regular spaghetti. Break the spaghetti in half and lay it in a criss cross pattern in the pot. Use the same cooking time.
  • Instead of using kale you can use a cup of frozen peas. Don’t add them in until after the pressure cooking time is up.
  • This recipe was adapted from Ham Tetrazzini on The Pioneer Woman.
  • I used my 6 quart Instant Pot*. You can also make this in a 3 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 mushrooms are Amish Beef Noodles and Power Soup.
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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Instant Pot Ham Tetrazzini
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Enemy Casserole


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  • Author: 365 Days of Slow and Pressure Cooking
  • Prep Time: 20 minutes
  • Cook Time: 5 minutes (plus 10 minute NPR)
  • Total Time: 25 minutes
  • Yield: 4–6 servings 1x
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Description

A twist on ham tetrazzini made in the Instant Pot. An easy recipe with noodles, mushrooms, celery, kale, cheddar and more. 


Ingredients

Scale
  • 2 Tbsp butter
  • 4 ounces sliced mushrooms
  • 1 small onion, diced
  • 1 rib celery, sliced
  • 3/4 tsp kosher salt
  • 1 tsp black pepper
  • 1 tsp poultry seasoning
  • 4 garlic cloves, minced
  • 2 cups chicken broth
  • 8 ounces Reams frozen noodles
  • 8 ounces ham cubes
  • 1 Tbsp white wine vinegar
  • 2 ounces cream cheese
  • 2 cups chopped kale, stems removed
  • 1/2 cup shredded cheddar

Instructions

  1. Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the mushrooms, onion, celery, salt, pepper and poultry seasoning. Saute for 4 minutes. Add in the garlic and saute for 30 seconds. 
  2. Pour in the broth and scrape bottom of pot so that nothing is sticking. Turn off Instant Pot. 
  3. Add in the frozen noodles, ham cubes, vinegar, cream cheese and kale. 
  4. Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set the manual/pressure cook button to 5 minutes. When time is up let pot sit for 10 minutes and then move valve to venting. Remove the lid. 
  5. Sprinkle cheddar on top and let it melt. 
  6. Serve and enjoy!
  • Category: Pasta
  • 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.

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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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