Classic Country Gentlemen’s Casserole–an easy Instant Pot or slow cooker dinner made with tender chicken, rice, celery, mushrooms, crunchy water chestnuts and almonds in a creamy, cheesy sauce.

Classic Country Gentlemen’s Casserole
Today’s recipe is adapted from country gentlemen casserole on Just a Pinch. It’s got a little bit of everything in it…celery, mushrooms, water chestnuts, almonds and more. It’s got some crunch and texture with the water chestnuts and almonds. If you want to add even more crunch you can add a cornflake topping like the original casserole. This easy, filling dinner is like something you’d make from an old fashioned church cookbook. My crew ate it all!
Ingredients/Substitution Ideas
- Butter–or olive oil
- Celery
- Onion–or shallot
- Chicken broth–or water and Better than Bouillon chicken base
- Red wine vinegar–or white wine vinegar
- Parboiled rice–also called converted rice
- Garlic powder–or 1 Tbsp minced garlic
- Black pepper
- Kosher salt
- Canned mushrooms–or 4 oz fresh sliced mushrooms
- Water chestnuts
- Cooked cubed chicken–I used rotisserie chicken
- Cream of chicken with herbs soup–or cream of mushroom
- Slivered almonds–or sliced almonds work as well
- Sour cream–or plain Greek yogurt
- Cheddar cheese
Steps
Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the celery and onion and saute for 5 minutes.

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

Sprinkle in the rice. Add in garlic powder, pepper, salt, mushrooms, water chestnuts, chicken and cream of chicken soup. Don’t stir.

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

Stir in the almonds, sour cream and cheese.

Serve and enjoy!


Notes/Tips
- Serve with steamed green beans, roasted broccoli or a green salad.
- What is converted/parboiled rice? Don’t confuse converted rice (or sometimes it is called parboiled rice) with pre-cooked or minute rice. Parboiled rice has been processed in its husk by soaking, steaming, and drying. As a result, all the nutrients from the husk are absorbed into the grain before it’s removed. The starch content alters in the process, making cooked parboiled rice less sticky than regular white rice. The rice kernels aren’t clumpy and glued together instead they are more separated. I found a bag of parboiled rice at Walmart next to the normal long grain white rice. Sometimes I buy it at Winco in the bulk section. I have also found it in the orange box (Ben’s brand) next to other rices.
- I used my 6 quart Instant Pot*. You can also make this in a 4 or 8 quart pot.
- Store leftovers in an airtight container* in the refrigerator for 4 days. Freeze leftovers for up to 3 months.
- Other recipes you can make with slivered almonds Delicious Neiman Marcus Kielbasa Casserole and Instant Pot Country Captain Chicken.
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.


Classic Country Gentlemen’s Casserole
- Prep Time: 20 minutes
- Cook Time: 5 minutes (plus 5-10 minute NPR)
- Total Time: 25 minutes
- Yield: 4–6 servings 1x
Description
An easy Instant Pot or slow cooker dinner made with tender chicken, rice, celery, mushrooms, crunchy water chestnuts and almonds in a creamy, cheesy sauce.
Ingredients
- 1 Tbsp butter
- 1/2 cup diced celery
- 1/2 cup diced onion
- 1 1/2 cups chicken broth
- 1 Tbsp red wine vinegar
- 1 cup parboiled rice
- 1/2 tsp garlic powder
- 1/2 tsp black pepper
- 1/4 tsp kosher salt
- 1 (4 oz) can sliced mushrooms, drained
- 1 (5 oz) can water chestnuts, drained
- 2 cups cooked cubed chicken
- 1 (10.5 oz) can cream of chicken with herbs
- 1/3 cup slivered almonds
- 1/4 cup sour cream
- 1/2 cup shredded cheddar cheese
Instructions
Instant Pot Instructions:
- Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the celery and onion and saute for 5 minutes.
- Pour in the broth and vinegar and scrape bottom of pot so that nothing is sticking. Turn off Instant Pot.
- Sprinkle in the rice. Add in garlic powder, pepper, salt, mushrooms, water chestnuts, chicken and cream of chicken soup. Don’t stir.
- Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set manual/pressure cook button to 5 minutes. When time is up let pot sit for 5-10 minutes and then move valve to venting. Remove the lid.
- Stir in the almonds, sour cream and cheese.
- Serve and enjoy!
Slow Cooker Instructions:
- Heat a pan over medium high heat. Add in the butter and let it melt. Add in the celery and onion and saute for 5 minutes. Transfer to slow cooker.
- Stir in broth, vinegar, rice, garlic powder, pepper, salt, mushrooms, water chestnuts, chicken and cream of chicken soup.
- Cover and cook on high for 2 hours, or until rice is tender.
- Stir in the almonds, sour cream and cheese.
- Serve and enjoy!
- Category: Chicken
- Method: Instant Pot or Slow Cooker
More Chicken and Rice Recipes…
Joy’s Casserole
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Ashley’s Casserole
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Chicken Divan Casserole
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Pollo Loco Casserole
This Instant Pot chicken and black bean rice recipe is a creamy, flavor-packed one pot dinner made with tender chicken thighs, seasoned rice, black beans, cheddar cheese and a citrus punch from lime and orange.
Creamy Garlic Parmesan Chicken and Rice
An easy Instant Pot dinner made with tender chicken thighs, perfectly cooked rice, parmesan cheese and savory herbs for a comforting meal.
*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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