These Grilled Fish Tacos with Pineapple Rhubarb Salsa are stuffed with salt and pepper-crusted fish, a piquant pineapple rhubarb salsa and they're topped with a creamy avocado dip. Something a little different for taco night!
Grilled Fish Tacos with Pineapple Rhubarb Salsa are on our menu tonight. It doesn't have to be Taco Tuesday to enjoy these. Any night is a good night for tacos!
What is it about taco nights that seems to improve everyone's mood? I love looking forward to a casual meal like fish tacos. They're fun to put together, they're a little messy, and they make a weekday meal seem like a festive occasion.
Whether we're having Shrimp Tacos with Tomatillo Guacamole or Halibut Tacos with Tequila Lime Marinade, or Chipotle Peach Shrimp Tostadas, or these oh-so-good Shredded Chicken Tacos we always look forward to a laid-back taco night.
I made these Grilled Fish Tacos with Pineapple Rhubarb Salsa recently, primarily as a kitchen experiment. They're now officially "a thing" and I'm saving this recipe to use over and over.
Ready to get started? Here's what you'll need.
Ingredients
fish: any firm white fish will work beautifully. Crisp salt-and-pepper-crusted halibut was a great choice for these fish tacos, but any firm white fish would be equally as delicious.
tortillas: I used corn tortillas to keep this recipe gluten-free, but you can use your favourite tortillas.
salsa: This Pineapple Rhubarb Salsa is a little sweet and a little spicy. Rhubarb adds some crunch and red onion and jalapeño pepper contribute the heat that we expect from a salsa! You'll need pineapple, rhubarb, red onion, jalapeño pepper, lime and cilantro. If you don't have rhubarb, check this post for other salsa recipes: 6 Fresh Salsa Recipes
Pineapple Rhubarb Crisp has been a favourite dessert ever since I discovered that the natural sweetness of pineapple greatly reduced the need to add sugar to the recipe. Today, I decided to make that combo into something different and this sweet and spicy salsa was perfect with these grilled fish tacos.
avocado cream: The Avocado Cream is an easy but oh-so-delicious dip that holds everything together. Simply combine Greek yogurt with avocado and flavour with a some cilantro, honey and a squeeze of lime.
While rhubarb is actually a vegetable, it's often considered a fruit because it is most commonly used as one. It's a powerhouse of nutrients. Did you know it's a good source of calcium? Besides that, it is packed with other minerals, vitamins, and fiber. 100 grams of rhubarb has only 21 calories.
How to assemble these grilled fish tacos
Heat the corn tortillas. Wrap a stack of tortillas in foil, then heat at 350°F. for 10 minutes. You can also heat them on a grill.
Add a handful of chopped greens to the warm tortilla first.
Then add a scoop of pineapple rhubarb salsa, a few pieces of grilled fish, and a dollop of avocado cream.
Serve with napkins and extra tortilla chips to use up all that salsa!
When rhubarb season rolls around, I love to experiment and find new ways to use it. I've made both this Strawberry Rhubarb Smoothie and this Skinny Strawberry Rhubarb Parfait several times already this Spring.
This Gluten-Free Strawberry Rhubarb Galette was a big hit in our home! The mint in my garden is thriving, so Rhubarb Mint Mojito will be on the menu soon, once those warm sunny evenings finally arrive.
But in the meantime, I'll be making these fish tacos with pineapple rhubarb salsa regularly. Enjoy, everyone!

Grilled Fish Tacos with Pineapple Rhubarb Salsa
Ingredients
For the Fish
- 1 pound firm white fish fillets, like halibut, cod, sea bass or other white fish
- ½ tsp each sea salt and freshly ground pepper
- oil for the grill or skillet
- 1 tsp dried chili flakes
For the Pineapple Salsa
- 2 cups fresh pineapple, finely diced
- 1 cup fresh rhubarb, finely diced
- ¼ cup red onion, finely diced
- 1 medium jalapeño pepper, seeded and minced
- 1 medium lime, juice of
- ¼ cup cilantro, minced
For the Avocado Cream
- ½ cup plain Greek yogurt
- ¼ cup avocado, diced
- 1 tbsp cilantro, minced
- 1 tsp honey
- a squeeze of lime juice
For the Tortillas
- 8 corn tortillas
- oil for the grill
- 2 cups romaine, for other crispy greens, finely sliced
Instructions
- Prepare the Pineapple Rhubarb Salsa first to allow flavours to blend. Combine all ingredients in a medium bowl, cover and refrigerate.
- Combine the Avocado Cream ingredients in a blender and set aside.
- Heat a grill or skillet. Add a high heat oil, like grape seed or avocado oil, and heat until almost smoking. Pat the fish dry. Sprinkle with salt and pepper. Add to hot grill or skillet and sear for 2 - 3 minutes or until golden brown. Using a fish turner, flip and cook for 2 - 3 minutes on the other side, just until fish flakes easily with a fork. Cook time will depend on the thickness of your fillet. Do not overcook. The fish will continue to cook after you remove it from the skillet. Sprinkle lightly with dried chili flakes, if desired.
- Heat tortillas on grill, brushing with a little oil to prevent sticking. If heating them in the oven, wrap a stack in foil and heat for 10 minutes at 350°F.
- Assemble the tacos. Add greens, salsa, fish, and top with avocado cream. Serve immediately with napkins!
Nutrition
This post was originally published in 2017. It has been updated and improved with new information.
Nicoletta @sugarlovespices says
I am really loving the flavors in these tacos! The halibut is such a great meaty fish for tacos, and I am intrigued by your pineapple rhubarb salsa. I am pretty sure it works beautifully in combination with the other flavors of these amazing tacos. P.s. I agree, tacos can make a boring weekday meal such a fun and exciting experience 🙂
Flavour & Savour says
Thanks Nicoletta! I was surprised at just how good the pineapple rhubarb salsa was! It was an experiment that succeeded!
Gabby says
I love rhubarb and also use it for sweet dishes. I will definitely want to try this salsa!
Flavour & Savour says
Thanks Gabby,
This is a salsa I'll make over and over! The rhubarb gives it a nice crunch.
Natalie Browne says
I always love a good fish taco. I don't use rhubarb a lot, but I'm intrigued by your idea of making salsa with it. I also love the sound of rhubarb pineapple crisp, lol. As always, these look delicious, Elaine
Flavour & Savour says
Thanks Natalie,
Rhubarb has such a short season, so I try to use it in as many ways as I can while it's fresh. Fish tacos are so versatile, aren't they?
Julia says
Now this is combination that I would never think of. It looks absolutely delicious and I bet it tastes just as good. Rhubarb is one of the many things I miss...boohoo. Beautiful looking dish!
Flavour & Savour says
Thanks Julia!
Marie-Pierre Breton says
This is a fun way to make tacos! I would never have thought of mixing rhubarb and pineapple, I need to try this out for sure! Lovely picture also!
Flavour & Savour says
Thanks Marie! I hope you get a chance to try it!
Cathy says
I enjoyed fish tacos on our recent trip and am inspired to make yours now!
I also really like the idea of combining pineapple with rhubarb! I have resisted using a lot of rhubarb because of all the sugar that usually goes with it. Now I can reap the nutritional benefits without the guilt!
Flavour & Savour says
I feel the same way, Cathy. The natural sweetness of pineapple really balances tart rhubarb. Hope you like it as much as we do!
Terri@foodmeanderings says
I love the idea of rhubarb in salsa! I have a bag in the freezer and am choosing carefully as to what to do with it. I need to try this! We love fish tacos 'round here!
Flavour & Savour says
Yes, Terri--try it! It's so good! I have also known to be a little stingy with my rhubarb. I make a rhubarb compote and add it to parfaits and smoothies. If you're looking for rhubarb recipes, I you can find a few more in my Recipe Index. Thanks for stopping by!