This keto jalapeno popper chicken casserole is a delightful blend of creamy, cheesy goodness with a spicy kick. It's perfect for those following a low-carb diet but still craving comfort food. The combination of shredded chicken, cream cheese, and cheddar cheese makes it rich and satisfying, while the jalapenos add just the right amount of heat.
If you don't usually keep cream cheese or jalapenos in your kitchen, you'll need to pick these up at the supermarket. Cream cheese is typically found in the dairy section, while jalapenos can be found in the produce aisle. Make sure to get fresh jalapenos for the best flavor.

Ingredients For Keto Jalapeno Popper Chicken Casserole
Cooked chicken: Shredded chicken provides the protein base for this casserole.
Cream cheese: Adds a creamy texture and rich flavor to the dish.
Cheddar cheese: Shredded cheddar cheese gives a sharp, tangy taste and melts beautifully.
Jalapenos: Chopped jalapenos bring a spicy kick to the casserole.
Garlic powder: Enhances the overall flavor with a hint of garlic.
Onion powder: Adds a subtle onion flavor without the need for fresh onions.
Salt: Balances and enhances the flavors of all the ingredients.
Black pepper: Adds a touch of heat and depth to the dish.
Technique Tip for This Recipe
When combining the shredded chicken with the cream cheese, make sure the cream cheese is fully softened to ensure a smooth and even mixture. This will help the cheddar cheese and jalapenos distribute more uniformly throughout the casserole, resulting in a consistent flavor in every bite. Additionally, consider using freshly shredded cheddar cheese instead of pre-shredded for better melting and a creamier texture.
Suggested Side Dishes
Alternative Ingredients
cooked chicken - Substitute with cooked turkey: Turkey has a similar texture and flavor profile, making it a suitable low-carb alternative.
cream cheese - Substitute with mascarpone cheese: Mascarpone has a similar creamy texture and mild flavor, fitting well into a keto diet.
cheddar cheese - Substitute with Monterey Jack cheese: Monterey Jack melts well and has a mild flavor that complements the dish.
jalapenos - Substitute with poblano peppers: Poblano peppers are milder but still provide a slight heat and a similar texture.
garlic powder - Substitute with fresh garlic: Fresh garlic offers a more robust flavor and can be used in the same quantity.
onion powder - Substitute with shallot powder: Shallot powder has a slightly sweeter and more delicate flavor, making it a good alternative.
salt - Substitute with sea salt: Sea salt provides a similar level of saltiness but with a slightly different mineral profile.
black pepper - Substitute with white pepper: White pepper has a milder flavor and can be used in the same quantity for a subtle difference.
Other Alternative Recipes Similar to This Casserole
How to Store or Freeze This Casserole
- Allow the casserole to cool completely before storing. This helps prevent condensation, which can make the dish soggy.
- Transfer the cooled casserole to an airtight container. If you don't have one large enough, you can use multiple smaller containers.
- For short-term storage, place the container in the refrigerator. The casserole will stay fresh for up to 3-4 days.
- For long-term storage, wrap the casserole tightly with plastic wrap, then cover with aluminum foil. This double layer helps prevent freezer burn.
- Label the container with the date and contents to keep track of its freshness.
- Place the wrapped casserole in the freezer. It can be stored for up to 2-3 months.
- To reheat, thaw the casserole in the refrigerator overnight if frozen. Preheat your oven to 350°F (175°C).
- Transfer the casserole to an oven-safe dish if it’s not already in one. Cover with foil to prevent the top from over-browning.
- Bake for 20-25 minutes, or until heated through. Remove the foil during the last 5 minutes to allow the top to crisp up.
- For a quicker option, you can reheat individual portions in the microwave. Place a portion on a microwave-safe plate, cover with a microwave-safe lid or another plate, and heat on medium power for 2-3 minutes, or until hot.
How to Reheat Leftovers
Oven Method:
- Preheat your oven to 350°F (175°C).
- Transfer the leftover Keto Jalapeno Popper Chicken Casserole to an oven-safe dish.
- Cover the dish with aluminum foil to prevent the chicken from drying out.
- Bake for 20-25 minutes, or until the casserole is heated through and the cheese is bubbly.
Microwave Method:
- Place a portion of the leftover casserole in a microwave-safe dish.
- Cover the dish with a microwave-safe lid or a damp paper towel.
- Heat on medium power for 2-3 minutes, stirring halfway through to ensure even heating.
- Check the temperature and heat for an additional 1-2 minutes if necessary.
Stovetop Method:
- Heat a non-stick skillet over medium heat.
- Add a small amount of olive oil or butter to the skillet.
- Place the leftover casserole in the skillet and cover with a lid.
- Cook for 5-7 minutes, stirring occasionally, until the chicken is heated through and the cheese is melted.
Air Fryer Method:
- Preheat your air fryer to 350°F (175°C).
- Place the leftover Keto Jalapeno Popper Chicken Casserole in an air fryer-safe dish.
- Heat for 5-7 minutes, checking halfway through to ensure it doesn't overcook.
- Remove when the cheese is bubbly and the casserole is heated through.
Best Tools for Making This Casserole
Oven: Used to bake the casserole at 375°F (190°C) until it is bubbly and golden brown on top.
Mixing bowl: Used to combine the shredded chicken, cream cheese, cheddar cheese, jalapenos, garlic powder, onion powder, salt, and black pepper.
Baking dish: Used to spread the mixture evenly before baking.
Spatula: Used to mix the ingredients thoroughly in the mixing bowl.
Measuring spoons: Used to measure out the garlic powder, onion powder, salt, and black pepper accurately.
Measuring cups: Used to measure the shredded chicken, cream cheese, cheddar cheese, and chopped jalapenos.
Knife: Used to chop the jalapenos.
Cutting board: Used as a surface to chop the jalapenos.
Oven mitts: Used to safely handle the hot baking dish when removing it from the oven.
How to Save Time on Making This Casserole
Use rotisserie chicken: Save time by using pre-cooked rotisserie chicken instead of cooking and shredding your own.
Pre-chop ingredients: Chop the jalapenos and measure out the spices ahead of time to streamline the assembly process.
Soften cream cheese quickly: Microwave the cream cheese for 20-30 seconds to soften it faster.
Shred cheese in bulk: Shred extra cheddar cheese and store it in the fridge for future recipes.
Use a food processor: Quickly combine all ingredients using a food processor to save mixing time.

Keto Jalapeno Popper Chicken Casserole
Ingredients
Main Ingredients
- 4 cups Cooked Chicken, shredded
- 8 oz Cream Cheese, softened
- 1 cup Cheddar Cheese, shredded
- ½ cup Jalapenos, chopped
- 1 teaspoon Garlic Powder
- 1 teaspoon Onion Powder
- ½ teaspoon Salt
- ½ teaspoon Black Pepper
Instructions
- Preheat oven to 375°F (190°C).
- In a mixing bowl, combine shredded chicken, cream cheese, cheddar cheese, jalapenos, garlic powder, onion powder, salt, and black pepper.
- Spread the mixture evenly in a baking dish.
- Bake for 25-30 minutes, until bubbly and golden brown on top.
- Let it cool for a few minutes before serving.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Casserole
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