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Blackened Mahi Mahi Fish Burgers

A burger you can sink your teeth into! This Blackened Mahi Mahi Fish Burger is topped with grilled pineapple and sweet spicy Piquillo Pepper Aioli, and it only takes 15 minutes to make!

Blackened Mahi Mahi Fish Burger topped with grilled pineapple on a bun

Blackened Mahi Mahi Fish Burger

I cannot believe that 4 years ago today I was heading to the hospital to have our first child! I had no idea what was in store and to be honest I was a little freaked out! Not about the birth, more about the aftermath.

Someone was going to let me take care of a human!

It’s amazing to me how God builds that innate ability to be a mother into each and every woman! I had never babysat before, never changed a diaper, and the reason we waited 5 years to have a baby was because of me. But as soon as they put my 10 lbs. 2 oz. baby on my chest I was overcome with love! I knew what to do and didn’t all at the same time.

Collage of photos of Cason

Breastfeeding came pretty easy, which was a blessing, and he was an eater for sure! He’s always been in the 95th percentage in both height and weight since he was born. Definitely takes after his daddy who is 6’5″!

I can remember waking up in the middle of the night to feed him and not caring about sleep because I got to hold him and stroke his sweet head.

Blackened Mahi Mahi Fish Burger topped with grilled pineapple and pickled onions

Today I spent the day looking at all the pictures of him growing up on my phone and just starting crying. What a blessing he has been in our life. Sure there are days that are hard and I wish I had a little more patience, but being his mother is the greatist honor of my life!!

He has a constant curiosity for the life that’s going on around him. He is adventurous but cautious when he needs to be. He is endlessly silly. For real, this kid will dress up in the craziest outfits for the most random reasons, but other times he’s very adamant about matching his shirt and underwear.

Collage of photos of Cason

He is a worshipper and loves to sing! There are times when I’m driving in the car and he will start singing along to a worship song with his hands raised in the air. He is so tender hearted, when someone else is in pain he hurts for them and wants to help them. He wants to make sure everyone feels included. He loves to play rough with daddy and copy everything daddy does, but will slow down to read books or cook in the kitchen. He is full of faith, this past year he has been praying with me for another little brother or sister and even comes up with names!

He is a lover, a warrior, smart, hilarious, full of joy, creative … and all MINE!  And I’m going to soak up every minute of life with him! Happy Birthday to my sweet baby boy! Love you to the moon and back!

Blackened Mahi Mahi Fish Burger topped with grilled pineapple on a bun

Ok… wiping the tears away and moving on to the recipe. Get it together! 🙂

Keeping along with the grilling theme I thought a lighter burger recipe was appropriate; and you are gonna fall in love with this Blackened Mahi Mahi Fish Burger!

The spices coated on the Mahi Mahi itself have the perfect amount of heat and those spices are seared into the fish while on the grill. To compliment the spice I grilled a pineapple for a little sweetness, then added some lettuce for greens and a slight spicy sweet Piquillo Pepper Aioli.  But the kicker and something I always do for every burger or sandwich I make is toast the bun on the grill. It’s a small thing but definitely brings any dish up one more notch!

Blackened Mahi Mahi Fish Burger topped with grilled pineapple and Piquillo Pepper Aioli on a bun

Let’s be sure to ring in this grilling season with a big bang!

So if you’re thinking of grilling out this weekend, go for a Fish Burger and change things up a bit … instead of that same old regular Hamburger!

Bon Appetit my friends!

Blackened Mahi Mahi Fish Burger topped with grilled pineapple on a bun

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Blackened Mahi Mahi Fish Burgers - web-2

Blackened Mahi Mahi Fish Burgers

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  • Author: Krista
  • Prep Time: 5 mins
  • Cook Time: 15 mins
  • Total Time: 20 mins
  • Yield: 4 burgers 1x
  • Category: Lunch
  • Method: Grill
  • Cuisine: Caribbean


A burger you can sink your teeth into! This Blackened Mahi Mahi Fish Burger is topped with grilled pineapple and sweet spicy Piquillo Pepper Aioli, and it only takes 15 minutes to make!



Blackened Mahi Mahi Fish Burger:

  • 4 4-5 oz. filets Mahi Mahi, skin removed
  • 1 tablespoon cajun seasoning blend
  • 1/2 teaspoon garlic powder

Piquillo Pepper Aioli:

  • 2 roasted piquillo peppers
  • 1/4 cup mayo
  • 1/4 garlic powder
  • 2 teaspoons fresh lime juice
  • dash of hot sauce
  • pinch of salt


  • 4 thick slices of fresh pineapple
  • 8 leafs of green leaf lettuce
  • 4 whole wheat buns
  • pickled onions {optional}


  1. Heat grill to medium high heat.
  2. To a food processor add piquillo peppers, mayo, garlic powder, dash of hot sauce, fresh lime juice, salt. Set aside.
  3. To a small bowl add cajun season and garlic powder, mix and set aside.
  4. Pat Mahi Mahi filets dry.
  5. Season both sides of Mahi Mahi with cajun seasoning mix.
  6. Spray the grill grates with PAM cooking spray or rub down with olive oil. Place pineapple and mahi mahi on the grill. Grill each side of the pineapple for 4-5 minutes while grilling each side of the mahi mahi for 3-4 minutes. (if you are trying to flip the fish and it sticks, let it sit another minute before flipping) Remove from grill and let cool.
  7. While those are cooling, through the buns on the grill, inside part down first. Grill for 1-2 minutes. Remove.
  8. Assemble the Burgers: Bottom bun, 2 leaves of lettuce, mahi mahi, pineapple {optionalpickled onions}, spread aioli on top bun and serve!

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16 comments on “Blackened Mahi Mahi Fish Burgers”

  1. Avatar photo
    Ginny McMeans

    You are so lucky to have a wonderful child like your little one. He sounds like a charmer :). I gotta say your sandwich is gorgeous too.

    1. Thank you so much Ginny, he is such a little sweet heart! And glad you enjoyed that fish burger girl! πŸ™‚

  2. Avatar photo
    Laura O|Petite Allergy Treats

    Your son is just adorable! They *do* grow up so fast… I keep telling my 4 year if he keeps growing we’ll get a new baby to replace him πŸ˜‰ Annd let the grilling season begin!!

  3. Avatar photo
    Heather | All Roads Lead to the Kitchen

    This looks beyond incredible – those toppings are the perfect complement. I used to make mahi sliders once upon a time in a restaurant I worked in and they were my fave, but somehow I’d forgotten them…this will more than suffice! Happy Birthday to your handsome little (big) man. πŸ™‚

    1. Ohh the sliders are genius! I’ve had salmon sliders before at a restaurant and they were awesome! Fish on burgers rocks! Thanks for the birthday wishes girl!

  4. Avatar photo
    Sheena @ Hot Eats and Cool Reads

    I love fish burgers and these ones looks so amazing! Love the flavors!!

  5. Avatar photo
    Erin @ Dinners, Dishes, and Desserts

    What a little cutie! My little guy is almost 11 and has always been in the 97% for height as well. He would love these, he is a huge fan of anything with fish!

    1. ohhh I can’t even think about double digits yet, I know it will go by so fast! πŸ™‚ And way to go for him liking fish!!!

  6. Avatar photo
    Justine | Cooking and Beer

    This is so sweet, Krista. Thanks so much for sharing with us! I’m very similar when it comes to having children, which why it might be a couple of years before we do so, but this is reassuring to know that it’s just a natural instinct, and you just know what to do! Also, these burgers look amazing. <3

    1. Yes, it really is! Never thought it would be especially because babies freaked me out! πŸ™‚ But have them when you’re ready… and enjoy that one on one time with the hubs! πŸ™‚

      On a side note.. make the burgers! They are also life changing. πŸ™‚ hehe

  7. Avatar photo

    This is the sweetest post! You are such a generous and loving mamma. Love you girlie! (PS. Ben is going to be obsessed w/ this burgers. Saved for grilling season!)

    1. Thank you so much sweet friend! πŸ™‚ Love you too!

      And yes Ben will be obsessed with these… heck I’m obsessed with these!