This post contains affiliate links. Please see our disclosure policy.
If you like a tuna melt, you’ll love this sardine-forward situation. This spicy sardine melt features wild-caught fillets mashed with chopped veggies and pickled jalapeños, piled onto bread, and finished with gooey cheddar. It’s salty, punchy, and exactly the kind of low-effort comfort food worth repeating.
Crispy veggies, meaty sardines, melted cheese, and pickled jalapeños for a little heat—that’s the whole deal with this spicy sardine melt. It might sound unhinged if you’re anti-sardine, but if you know, you know: this is deeply savory, incredibly comforting, and very much worth making.
Looking for more canned sardine recipes? Check out my sardine salad sandwich or this pasta with sardines.
Table of Contents
Why You’ll Love This
- Sardines offer up a nice dose of omega-3s
- It’s total comfort food
- It’s an exciting way to use up canned sardines
- Gives you a nice amount of protein
Ingredient Overview
A quick look at the essentials before we dive into the recipe card:
- Sardines: King Oscar’s Brisling Sardines With Hot Jalapeños are ideal. You can use the peppers right from the can, plus extra, of course.
- Vegetables: Crunchy celery and onion are great for texture. I also like adding diced tomato for a pop of acidity and brightness.
- Cheese: Cheddar is nice and sharp. Pepperjack or Gouda are also tasty options.
Step-by-Step: How to Make a Spicy Sardine Melt
Step 1: Get the Bread Buttered
Preheat the oven to 400ºF. Butter one side of each bread slice and place them on a baking sheet, buttered-side down. Set aside.
Step 2: Make the Filling
In a large bowl, whisk together the mayonnaise, lemon zest, and lemon juice. Drain the oil from the sardines, then dump the sardines and slices of jalapeños from the can into the mayo mixture. Using a fork, break down the sardines and jalapeños and stir them into the mixture. Add the celery, pickled jalapeños, red onion, tomatoes, and parsley to the mixture. Stir to combine until everything is thoroughly mixed; season with salt and pepper.
Step 3: Bring that Sandwich Together
Place one slice of cheddar on top of each bread slice (make sure they’re all buttered-side down on the baking sheet at this point). Transfer half of the mixture onto one slice of bread, spreading it out evenly. Do the same thing with the rest of the mixture on another slice of bread. Then, close the sandwiches with the other two slices of cheese and bread.
Step 4: Bake until Melted
Bake until the cheese is melted and the bread is golden brown, about 7-10 minutes. Carefully flip the sandwiches halfway through if needed. (This depends on how the heat distributes throughout your oven.)
Substitutions & Variations
- No-Heat Version: Use sardines packed in olive oil and ditch the jalapeños for chopped pickles.
- Extra Protein: Use plain Greek yogurt instead of mayo.
- Gluten-Free Option: Use GF bread slices.
- Dairy-Free: Use avocado or Dijon mustard instead of mayo.
Storing & Reheating Leftovers
- Fridge: Wrap any leftover melt sandiwiches tightly in wax paper or tinfoil, then store in an airtight container. This will last in the fridge for up to 3 days.
- Reheat: To keep the sandwich crisp (and not sad), skip the microwave if you can.
- Air Fryer (Best Option): Heat at 350–370°F for 2–3 minutes, just until heated through and the cheese is melted.
- Oven or Toaster Oven: Preheat to 350°F, place the sandwich on a baking sheet, and heat for 5–10 minutes.
- Skillet: Warm in a dry skillet over medium heat for 2–3 minutes per side, covering the pan so the center heats through.
- Microwave (Last Resort): Use 50% power for 45 seconds, flip, then microwave for another 45 seconds to prevent the bread from becoming rubbery.
What to Serve With It
Notes About King Oscar’s Sardines With Jalapeños
- Wild-caught from Norway’s fjords and coastal waters
- Sustainable
- Lightly smoked
- Hand-packed
- Kosher-certified
Frequently Asked Questions
Yes, sardines and a sharp or salty cheese go extremely well together.
Sardines love bold company: think bright, acidic hits like lemon, capers, or pickled onions; creamy balances like avocado, cream cheese, or mayo; a little heat from chili crisp or hot sauce; and fresh herbs such as dill or parsley.
Spicy Sardine Melt
Ingredients
- 4 slices of bread (I used sourdough)
- 2 TBSP butter
- 2 TBSP mayonnaise
- 1/2 tsp lemon zest
- 1 TBSP freshly squeezed lemon juice
- 1 3.75 oz can of King Oscar’s Brisling Sardines with Hot Jalapeño Peppers, oil drained
- 1/4 cup finely chopped celery
- 1 TBSP finely chopped pickled jalapeños
- 1/4 cup finely chopped red onion
- 1/2 cup diced tomato
- 1 TBSP freshly chopped parsley
- Kosher salt and cracked black pepper, to taste
- 4 slices good quality cheddar cheese (I used a smokehouse cheddar)
Instructions
- Preheat the oven to 400ºF. Butter one side of each bread slice and place them on a baking sheet, buttered-side down. Set aside.
- In a large bowl, whisk together the mayonnaise, lemon zest, and lemon juice.
- Drain the oil from the sardines, then dump the sardines and slices of jalapeños from the can into the mayo mixture. Using a fork, break down the sardines and jalapeños and stir them into the mixture. Add the celery, pickled jalapeños, red onion, tomatoes, and parsley to the mixture. Stir to combine until everything is thoroughly mixed; season with salt and pepper.
- Place one slice of cheddar on top of each bread slice (make sure they’re all buttered-side down on the baking sheet at this point). Transfer half of the mixture onto one slice of bread, spreading it out evenly. Do the same thing with the rest of the mixture on another slice of bread. Then, close the sandwiches with the other two slices of cheese and bread.
- Bake until the cheese is melted and the bread is golden brown, about 7-10 minutes. Carefully flip the sandwiches halfway through if needed. (This depends on how the heat distributes throughout your oven.)
Yum can’t wait to try
Nice I like it my parents both loved it
This was so delicious. I have never thought to make a sardine melt. Definitely will make again.