How to Make Tostadas from Leftover Tortillas & Perfect Toppings

So, you have made a lot of homemade tortillas.

Maybe you got excited with masa. Maybe you pressed more tortillas than you needed. Maybe taco night was generous, beautiful, and chaotic. And now you have a stack of leftover corn tortillas sitting in the fridge. Good.

Because leftover tortillas are not a problem. They are the beginning of tostadas.

And tostadas are one of the easiest, crunchiest, most satisfying ways to turn yesterday’s tortillas into something that feels completely new.

What Is a Tostada?

A tostada is a crispy, flat tortilla used as a base for toppings. In Mexican cooking, tostadas are often made by frying or baking corn tortillas until crisp, then loading them with beans, proteins, salsas, vegetables, avocado, cheese, seafood or whatever delicious things you have ready.

In practical home-cooking terms: a tostada is what happens when a tortilla becomes crunchy enough to carry dinner.

And yes, you can make them from leftover homemade tortillas.

Even better: slightly stale tortillas are perfect for tostadas.

Why Leftover Tortillas Are Perfect for Tostadas

When I make homemade tortillas, I usually let them cool down, place them into a zip-lock bag, and keep them in the fridge.

For the first few days, they are still soft enough to reheat. I take a few out, put them into a tortilla warmer pouch, microwave them, and they are ready for tacos again.

But after a few extra days, they can become a little stale.

Not spoiled. Not ruined. Just less soft.

And that is exactly when they become useful in a different way.

A slightly drier tortilla crisps beautifully. Instead of trying to force it back into taco mode, turn it into a tostada. You get crunch, structure, and a completely different eating experience.

It is one of those small kitchen tricks that makes homemade tortilla making even more rewarding.

How to Make Tostadas in a Skillet

The classic way is simple: fry the tortillas in hot oil until they become crisp.

Heat a small layer of oil in a skillet. Once the oil is hot, add one tortilla at a time and fry until it becomes golden, firm and fully crisp. Turn it if needed, then remove it and let it cool on paper towel or a rack.

Once cooled, the tortilla becomes a proper tostada: crunchy, solid and ready for toppings.

This method is delicious. Of course it is. Hot oil usually knows what it is doing.

But after making tostadas a few times, I started wondering: do I really need to use so much oil every time?

My answer is no.

How to Make Air Fryer Tostadas

Yes, you can make tostadas in an air fryer.

I use my Ninja multi-cooker with the Air Crisp mode. I preheat it, set the temperature to 180°C, and cook the tortilla for about 5 minutes.

That’s it.

I tried brushing the tortilla with a little oil. I also tried making it with no oil at all.

Honestly? You do not need the oil.

The air fryer makes the tortilla perfectly crispy without it. It becomes dry, crunchy and sturdy enough to hold toppings.

So, if you want an easier and lighter way to make tostadas at home, this is the method I would use.

Skillet vs Air Fryer Tostadas

Both methods work.

Skillet-fried tostadas are richer, slightly more indulgent and have that classic fried crunch.

Air fryer tostadas are cleaner, easier, less oily and still very crispy. For everyday home cooking, especially if you already make tortillas regularly, the air fryer method is brilliant.

My practical recommendation is this:

Use the skillet when you want a full restaurant-style crunch.
Use the air fryer when you want an easy weekday tostada with very little effort (and healthier).

Either way, let the tostadas cool before topping them. They firm up as they cool, and that structure is exactly what you need.

Why Tostadas Are So Good for Plant-Based Cooking

Now, let’s talk about texture.

In my article about plant-based tacos that eat like a night out, I wrote about one common issue with vegan tacos: they can easily become too soft.

Refried beans are soft.
Tofu is soft.
Roasted vegetables are often soft.
Avocado is soft.
Cashew crema is soft.

All delicious, yes, but if everything is soft, the taco can feel a bit flat.

Of course, you can fix this with crunchy slaw, crispy mushrooms, toasted seeds, fried onions or even curly fries if you are feeling a bit unhinged in the best possible way.

But a tostada solves the problem instantly.

The crunch is already built in.

You can add refried beans, vegan cheese, salsa, avocado, herbs, greens or roasted vegetables, and suddenly the whole thing has structure. It eats better. It feels more exciting. It has that bite.

This is why tostadas are such a good trick for plant-based Mexican-inspired cooking.

Easy Plant-Based Tostada Ideas

Once you have crispy tostadas ready, the toppings can be very simple.

Start with refried beans. They are probably the easiest and most satisfying base. Spread them onto the tostada, then add avocado, fresh greens, salsa, pickled onions, jalapeños or a drizzle of crema.

This is also a great place to link to your beans article: How to Cook Beans: A Nutritional Powerhouse

Refried beans can sound humble, but on a tostada, they become exciting. They work as both flavour and glue, holding the toppings in place while giving you that creamy-crunchy contrast.

Other plant-based toppings that work beautifully:

• Grilled tofu with salsa macha or chipotle salsa.
• Shredded ancho mushrooms with refried beans and avocado.
• Roasted beetroot with cashew crema and herbs.
• Charred vegetables with beans, salsa and lime.
• Vegan cheese, pico de gallo and hot sauce for a very easy treat.

This is where tostadas become more than a snack. They become a flexible meal format.

Tostadas for Pescatarians

Tostadas are also excellent for fish and seafood.

Because they are flat and crisp, they can carry juicy, fresh and delicate toppings very well.

Think tuna tostada.
Think ceviche tostada.
Think grilled fish with salsa, avocado and herbs.

That contrast between a crunchy corn base and fresh seafood is one of the great pleasures of Mexican coastal food.

This would be a perfect place to link to your fish tacos article and showcase a tuna tostada variation.

Check my fish tacos article for a tuna tostada recipe.

Beetroot Tostadas: A Plant-Based Show-Off

Beetroot is another brilliant tostada topping.

It brings colour, sweetness, earthiness and a bit of Ukrainian flair. Pair it with something creamy: avocado, cashew crema, vegan cheese or tahini-style dressing, then add acidity from pickles, lime or salsa.

A beetroot tostada can look almost too pretty to eat, but it still works as proper food: crunchy base, creamy layer, juicy topping, fresh garnish.

This is where you can link to your beetroot article and showcase a beet tostada as a plant-based, colourful, slightly unexpected idea.

Check my beetroot article and learn the beet tostada recipe.

The Best Tostada Toppings

The best tostadas are built in layers.

Start with something creamy or spreadable. Refried beans are perfect because they help the other ingredients stick. Guacamole, avocado mash, cashew crema or vegan cheese also work.

Then add your main topping: tofu, ancho oyster mushrooms, beans, grilled fish, ceviche, tuna, roasted vegetables or beetroot.

Then add freshness: pico de gallo, herbs, shredded lettuce, cabbage, radish, cucumber or greens.

Then add salsa.

And because tostadas are solid, you can pile them up.

Sauces, condiments, herbs, avocado, pickles, hot sauce – go for it. Just remember that tostadas are crunchy, not magical engineering structures, so eat them with joy and maybe a napkin nearby.

My Favourite Simple Tostada Formula

For an easy plant-based tostada, I would do this:

Crispy air fryer tostada.
Refried beans.
Avocado.
Fresh greens.
Salsa.
Hot sauce.
Maybe some vegan cheese or cashew crema.

That is already enough.

It is crunchy, creamy, fresh, spicy and filling. And it turns a leftover tortilla into something that feels like a proper dish.

Tostadas vs Tortilla Chips

I used to make tortilla chips from leftover tortillas too.

And tortilla chips are great, especially with salsa, guacamole or nachos.

But tostadas feel more like a meal.

A chip is for dipping.
A tostada is for building.

That is why I now think tostadas are one of the best ways to use leftover tortillas. You still get the crunch, but you also get a platform for beans, vegetables, fish, tofu, mushrooms, salsas and all the delicious things that make Mexican food so generous.

Yesterday’s Tortillas, Tomorrow’s Tostada Crunch

If you make homemade tortillas, don’t worry about leftovers.

Store them in the fridge. Reheat them for tacos during the first few days. And when they become a little stale, turn them into tostadas.

Fry them in oil if you want that classic crunch.

Or put them in the air fryer at 180°C for about 5 minutes and enjoy a crispy tostada without using oil.

Then load them with refried beans, vegan toppings, grilled tofu, mushrooms, beetroot, ceviche, tuna or fish.

It is simple. It is practical. It is delicious.

And it is one more reason to make proper tortillas at home.

FAQ: How To Make Tostadas

Can you make tostadas from leftover tortillas?

Yes. Leftover corn tortillas are ideal for tostadas, especially when they have become slightly stale. They crisp up beautifully when fried, baked or cooked in an air fryer.

How do you make tostadas in an air fryer?

Preheat the air fryer to 180°C, place the tortilla inside, and cook for about 5 minutes, or until crisp. You do not need to brush the tortilla with oil.

Do tostadas need oil?

No. Traditional tostadas are often fried in oil, but you can make crispy tostadas without oil in an air fryer.

What can you put on tostadas?

You can top tostadas with refried beans, avocado, salsa, tofu, mushrooms, grilled vegetables, vegan cheese, fish, tuna, ceviche, herbs, greens and hot sauces.

Are tostadas good for plant-based cooking?

Yes. Tostadas are especially good for plant-based meals because they add crunch and structure to softer ingredients like beans, tofu, avocado and roasted vegetables.

What is the difference between a tostada and a tortilla chip?

A tortilla chip is usually smaller and used for dipping. A tostada is a whole crispy tortilla used as a base for toppings.