Cajun Fish Foil Packets {Keto-Friendly}

Cajun Fish Foil Packets {Keto-Friendly}
PER Serving (4 ounces): CALORIES 373 | FAT 29g | CARBOHYDRATES 11g | FIBER 1g | NET CARBOHYDRATES 10g | PROTEIN 17g

Bring the camping experience right to your kitchen with these keto cajun fish foil packets.

You might think of fish foil packets as something traditionally made on camping expeditions, but this recipe takes all the fun of the outdoors and turns the same tasty dinner into an easy to make (and easy to clean) meal option for your busy family!

It includes healthy, delicious ingredients like flaky white fish, red bell pepper, coconut oil, and pineapple—which can work just fine on a keto diet, if you plan it correctly (we'll explain how below).

We know you're going to love these sweet and spicy fish foil packets. Enjoy!

Pro tip: this can be a great keto-friendly recipe to have in your back pocket any time you go camping, too. You can cook your fish foil packets right on the fire, and all the ingredients you need should stay perfectly in your cooler. If you're not sure about bringing fish along, substitute chicken instead!

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Cajun Fish

Ingredients You’ll Need

  • White fish like halibut, cod, or tilapia
  • Fresh pineapple
  • Red bell pepper
  • Coconut oil
  • Garlic
  • Green onions
  • Lime juice
  • Hot sauce

Cajun Fish

Benefits of Foil Packet Recipes

Convenient, delicious, and fun for the whole family—check out all of these benefits of fish foil packets!
  • Cooks fast: Start to finish, these keto-friendly fish foil packets only take 10 minutes to make. Talk about the perfect weeknight meal!
  • Minimal mess: You can eat right out of the foil packet, then crumple it up and toss it in the bin once you're done. No dishes for you tonight!
  • Easy to prepare ahead of time: If you know you're going to be pressed for time, arrange each foil packet hours before. You can do this 24 hours ahead of time if you want!
  • Can be cooked separately if people need to eat at different times: Again, the perfect solution for mid-week meal planning!
  • Fun for the whole family: Letting your kids customize their foil packets is a fun way to get the whole family involved with this meal.

Ingredient Spotlight: Flaky White Fish

Here's an impressive list of health benefits associated with eating flaky white fish like halibut or cod. 
  • White fish lowers your risk of cardiovascular disease [1]. 
  • It's incredibly high in protein (halibut, for example, can have upwards of 40g of protein per serving) [2]
  • It contains absolutely no carbs!
  • It's loaded with B vitamins, which help give you energy, keep the mitochondria in your cells healthy, and regulate your metabolism to help you keep burning calories!
  • White fish contains more than 10 essential minerals that your body needs, like magnesium, phosphorus, and iron.
  • It’s a good source of selenium, which is a mineral that's been shown to reduce your risk of cancer [3].
Now to the question you might be wondering about...

Is Pineapple Keto? 

The short answer is yes—but only sometimes.

The longer answer is that fruits like pineapple offer health benefits you don't want to ignore, and shouldn't necessarily always be avoided on a ketogenic diet.

After all, fresh pineapple contains liberal amounts of vitamin C, along with several key minerals your body needs, like iron, magnesium, and manganese [4].

However, one cup of pineapple is a bit high in carbs. 21g of carbs per serving isn't that bad (an apple has more), but that's still a little less than half the amount you should eat each day to stay in ketosis.

The saying "everything in moderation" applies perfectly here. You'll get four servings for each cup of pineapple you make with this recipe, meaning you're actually only eating about 5g of carbs with this meal.

So as long as you don't overdo it, and make sure the carbs work for your daily intake, you'll be fine.

Feel free to work pineapple into your routine from time to time—especially when the fresh stuff goes on sale.

Keto-Friendly Cajun Fish Foil Packets Recipe

Cajun Fish



  • 4 (4-ounce) filets of halibut, cod or other white fish
  • 1 tablespoon cajun seasoning
  • 2 tablespoons coconut oil, melted
  • 2 tablespoons extra virgin olive oil
  • 1 cup fresh pineapple, diced
  • ½ red bell pepper, diced
  • 2 stalks green onions, sliced thinly
  • 2 cloves garlic, minced
  • Juice from 1 lime
  • Dash of hot sauce
  • Pinch of salt and pepper


  1. Preheat oven to 425°F. Arrange fish filets on pieces of aluminum foil. Sprinkle each piece of fish with cajun seasoning.
  2. Melt coconut oil in a small pot at low heat. Drizzle oil over fish filets.
  3. Combine olive oil in a bowl with the remaining ingredients. Spoon the pineapple mixture over the fish filets and seal foil to make a packet.
  4. Place the foil packets on a sheet pan and bake in oven for 8-10 minutes until the fish is firm and flaky and reaches an internal temperature of 140°F or greater.
  • Prep Time: 15 minutes
  • Cook Time: 10 minutes
  • Yield: 4

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