If you’ve ever wondered what to do with leftover pernil, let me introduce you to what my family confidently calls the best sandwich in the world. This Puerto Rican pernil sandwich is loaded with juicy roast pork, melty cheese, crunchy garlic-buttered bread, and fresh toppings that take it completely over the top.
This is one of those meals my kids ask for again and again. And honestly? I don’t blame them. It’s easy, flavorful, and the perfect way to repurpose leftover lechón asado (pernil) into something totally crave-worthy.
Let’s get started.
Why You’ll Love This Pernil Sandwich
- Perfect way to use leftover Puerto Rican roast pork
- Can easily be made gluten-free
- Crispy, buttery, garlicky bread
- Family-friendly and customizable
- Ready in minutes with an air fryer (or skillet!)
Best Bread for a Puerto Rican Pernil Sandwich
Traditionally, a Puerto Rican pernil sandwich is made using a Puerto Rican pan sobao or pan de agua, which is soft on the inside with a lightly crisp exterior—perfect for soaking up all those delicious pork juices.
For this recipe, I used Canyon Bakehouse gluten-free buns, and honestly, they are one of my favorite gluten-free bread options. They’re:
- Soft, not gritty at all
- Slightly sweet (which pairs beautifully with savory pernil)
- Sturdy enough to hold all the fillings without falling apart
Toasting the bread with the garlic butter really brings out the texture and flavor, making it very close to that traditional experience—just gluten-free.
For the rest of my family, I used an Italian loaf, sliced into thirds, which also works great if you don’t have access to Puerto Rican bread.
👉 Tip: If you can find pan sobao at a local Latin bakery, definitely use it—it’s the most authentic option!
Ingredients
For the Sandwich
- Leftover Puerto Rican pernil (lechón asado)
- Bread of choice
- Gluten-free burger buns (Canyon Bakehouse recommended)
- Italian loaf (cut into thirds and sliced)
- Sliced cheese (your favorite kind)
Garlic Butter Spread
- Butter, melted
- 1 teaspoon garlic
- 1 teaspoon Italian seasoning
Mayo-Ketchup (Mayoketchup) Sauce
- 1 tablespoon mayonnaise
- 1 tablespoon ketchup
Toppings
- Avocado, sliced
- Lettuce
- Tomato
How to Make a Puerto Rican Pernil Sandwich
1. Make the Garlic Butter
Melt the butter in the microwave. Stir in the garlic and Italian seasoning until well combined. This buttery mixture adds so much flavor and helps create that irresistible crunch.
2. Prep the Bread
Slice your bread if it isn’t already cut. Brush the outside of each piece with the garlic butter mixture.
Add a slice of cheese directly onto the inside of the bread—this works especially well for gluten-free bread and helps everything melt together perfectly.
3. Add the Pernil
Pile on as much leftover pernil as you like. There’s really no wrong amount here—the more, the better!
4. Toast the Sandwich
Place the open-faced sandwich halves into the air fryer.
- Air Fryer: 400°F for about 3 minutes, or until the edges are golden and crunchy
- (You can also toast these in a skillet or oven if needed.)
You’ll know they’re ready when you hear that satisfying crunch.
5. Make the Mayoketchup
Mix one spoonful of mayo with one spoonful of ketchup. This simple sauce is a favorite in our house and adds just the right creamy tang.
6. Assemble the Sandwich
Spread the mayoketchup onto the bread, then layer:
- Avocado
- Lettuce
- Tomato
Top with the other half of the sandwich, press gently, and enjoy.
Serving Tips
After making the gluten-free sandwich for myself, I assemble the rest of the sandwiches using the Italian loaf for my family. These sandwiches are hearty, filling, and absolutely bursting with flavor.
Serve with:
- Tostones
- Sweet potato fries
- A simple salad
- Or just enjoy it on its own—it’s that good!
This Puerto Rican pernil sandwich is crunchy on the outside, juicy on the inside, and packed with bold flavor in every bite. If you already loved pernil, this sandwich will take your appreciation to a whole new level.
👉 Want to make the pernil from scratch? Be sure to check out my full Puerto Rican pernil recipe next!
💖 Yessi
Puerto Rican Pork Sandwich
Ingredients
For the Sandwich
- Leftover Puerto Rican pernil lechón asado
- Bread of choice Italian loaf or gluten-free buns
- Sliced cheese provolone, Swiss, or your favorite
Garlic Butter Spread
- 2 tablespoons butter melted
- 1 teaspoon minced garlic
- 1 teaspoon Italian seasoning
Mayo-Ketchup Sauce
- 1 tablespoon mayonnaise
- 1 tablespoon ketchup
Toppings
- Avocado sliced
- Lettuce
- Tomato sliced
Instructions
- In a small bowl, mix melted butter, garlic, and Italian seasoning.
- Slice bread if needed and brush the outside with the garlic butter mixture.
- Place cheese directly onto the inside of the bread.
- Add leftover pernil on top of the cheese.
- Place sandwich halves in the air fryer and cook at 400°F for 3 minutes, or until golden and crispy.
- Mix mayonnaise and ketchup together to make mayo-ketchup.
- Spread mayo-ketchup onto the toasted bread.
- Add avocado, lettuce, and tomato.
- Close the sandwich, slice if desired, and serve warm.
Video
Notes
- Great for using leftover pernil after holidays or family gatherings.
- Can be made gluten-free using gluten-free buns.
- Toast in a skillet or oven if you don’t have an air fryer.
