Love Your Neighbor Casserole–a creamy Instant Pot chicken and mushroom spaghetti with bell pepper and cheese.

Love Your Neighbor Casserole
This is another one pot meal that you’re going to love! You can share it with your neighbors and they’ll love it too. (Recipe adapted from Love Your Neighbor Casserole on Rachel Cooks With Love.) With seasoned chicken, sautéed mushrooms, and melty cheese, it hits all the cozy, savory notes of a casserole without needing the oven which is important at this time of year as the weather is heating up (I’m not ready for high 80s already!!!). It combines protein, carbs, and veggies in one dish, and you can easily tweak it to fit what you have on hand or your dietary preferences. Enjoy!
Ingredients/Substitution Ideas
- Butter–or olive oil
- Mushrooms
- Chicken broth–or water and Better than Bouillon chicken base
- Spaghetti–or another type of pasta like cavatappi, rotini, macaroni
- Boneless skinless chicken thighs–or boneless skinless chicken breasts
- Kosher salt
- Black pepper
- Onion powder
- Garlic powder
- Poultry seasoning
- Red bell pepper–or green bell pepper
- Cornstarch
- Milk–or evaporated milk, half and half, cream
- Cheddar cheese–or parmesan cheese
Steps
Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the mushrooms and saute until they start to brown.

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

Break the spaghetti in half and lay it in a criss cross pattern in the pot.

Toss the chicken with the salt, pepper, onion powder, garlic powder and poultry seasoning. Then place the chicken on top of the spaghetti. Add the bell pepper on top of the chicken.


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

Stir. In a small bowl stir together 1 Tbsp cornstarch with 1 Tbsp of cold water. Turn Instant Pot to saute setting. Stir the slurry into the pot. Stir the milk into the pot. Once thickened turn off Instant Pot.

Stir in the cheese.


Scoop onto plates and serve.

Notes/Tips
- Serve with a green salad, cucumber salad, fresh fruit or steamed green beans.
- Make sure to criss-cross the pasta to help prevent clumping and sticking.
- I like to use chicken thighs over breasts because thighs stay juicier and more tender under pressure; chicken breasts may dry out.
- Bell pepper is great, but you can add peas, spinach, or chopped sun-dried tomatoes at the end for variety.
- 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 red bell pepper are Instant Pot Midwest Pepper Steak and Chicken Bacon Chowder.
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.


Love Your Neighbor Casserole
- Prep Time: 20 minutes
- Cook Time: 4 minutes (plus 5 minute NPR)
- Total Time: 24 minutes
- Yield: 3–4 servings 1x
Description
A creamy Instant Pot chicken and mushroom spaghetti with bell pepper and cheese.
Ingredients
- 2 Tbsp butter
- 4 ounces sliced mushrooms
- 1 1/2 cups chicken broth
- 6 ounces spaghetti
- 1 pound boneless skinless chicken thighs, trimmed of fat and cut into bite size pieces
- 1 tsp kosher salt
- 1 tsp black pepper
- 1 tsp onion powder
- 1 tsp garlic powder
- 1 tsp poultry seasoning
- 1/2 of one red or green bell pepper, diced
- 1 Tbsp cornstarch
- 1/2 cup milk
- 1 cup shredded cheddar cheese (or a half cup parmesan)
Instructions
- Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the mushrooms and saute until they start to brown.
- Pour in the broth and scrape bottom of pot so that nothing is sticking. Turn off Instant Pot.
- Break the spaghetti in half and lay it in a criss cross pattern in the pot.
- Toss the chicken with the salt, pepper, onion powder, garlic powder and poultry seasoning. Then place the chicken on top of the spaghetti. Add the bell pepper on top of the chicken.
- Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set the manual/pressure cook button to 4 minutes. When time is up let pot sit for 5-10 minutes and then move valve to venting and remove the lid.
- Stir. In a small bowl stir together 1 Tbsp cornstarch with 1 Tbsp of cold water. Turn Instant Pot to saute setting. Stir the slurry into the pot. Stir the milk into the pot. Once thickened turn off Instant Pot.
- Stir in the cheese.
- Scoop onto plates and serve.
Notes
This recipe is easy to double to serve 6-8. Double all ingredients and keep the cooking time the same.
- Category: Chicken
- Method: Instant Pot

More Instant Pot recipes with spaghetti…
Instant Pot Cowboy Spaghetti
Easy spaghetti recipe with bacon, ground beef, Rotel, barbecue sauce and cheese. A hearty pasta dish that comes together quickly with the help of your Instant Pot.
Instant Pot Assassin’s Spaghetti
Instant Pot Assassin’s Spaghetti looks like normal spaghetti but it is spaghetti with an attitude! It’s got a flavor kick that you’re going to love. The spaghetti is cooked in a simmering tomato liquid and it absorbs all of the moisture (no colander needed!).
Instant Pot Red Eagle Spaghetti
A one pot meal of spaghetti and meatballs that comes together quickly.
Instant Pot Southwestern Spaghetti
An easy one pot spaghetti dinner with southwestern seasonings, geren bell pepper and cheese. A fun and delicious twist on normal spaghetti.
*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.





Made your Love Your Neighbor recipe but left out the red and green peppers and used sun-dried tomatoes instead.
Also used angel hair spaghetti and it was delicious.
Love that idea of sun dried tomatoes 🙂