Spanish Romesco Sauce: A Magic Dip with Roasted Almonds
Whole bell peppers blister over an open gas flame before they blend with roasted garlic for this Magic Spanish Romesco Sauce / Dip.

Spanish Romesco Sauce: A Magic Dip with Roasted Almonds blends chargrilled red bell peppers with a tomato and garlic cloves baked at 350°F (180°C). Toasted almonds and crustless white bread thicken the finished purée, creating a dense paste ideal for scooping with potato chips or crackers.
The bell peppers
You set two whole red bell peppers directly on a gas burner or an outdoor barbecue grill on high heat. The open flame blackens and blisters the skins. You turn the peppers occasionally until the outside burns and bubbles. You can also roast the peppers on an oven rack at the highest heat setting for 20 to 30 minutes.
You put the hot peppers into a bowl and cover it tightly. They need to sit undisturbed for at least 20 minutes. The trapped steam separates the thin skins from the thick flesh so you can peel them easily. You pull off the skins and discard them along with the stems and seeds.
One and a half cups of drained, tightly packed jarred chargrilled peppers will easily replace the whole ones if you want to skip the open flame. Since the jarred versions carry a sharper tartness compared to newly blistered peppers, keep the sherry vinegar out of the blender at first. Wait until the ingredients run completely smooth, and then mix in the vinegar only to taste.
The bread and almonds
Standard white sandwich bread breaks down cleanly in a blender pitcher. It creates a smoother texture in the finished sauce than artisanal loaves. Any type of bread works if you do not have white sandwich slices. You remove the crusts and tear two slices into bite-sized chunks. You place the torn bread and half a cup of natural almonds in a single layer on a baking tray. You bake them in the oven for five minutes until the bread turns golden brown. You remove the bread and almonds right away. You can use pre-roasted almonds. You must toast pre-roasted almonds for a shorter time so they do not burn.
The tomato and garlic
You set one whole tomato and five peeled garlic cloves on a square piece of foil. You drizzle them with two teaspoons of extra virgin olive oil and fold the foil into a tight packet. You place this foil packet on the same baking tray with the bread and almonds. You leave the packet on the tray in the oven for a further 25 minutes after you take the bread out. The vegetables roast for 30 minutes total until the tomato and garlic feel tender.
The foil traps the moisture to soften the tough garlic. You wait for the baked vegetables to cool until they are safe to touch. You pull the skin away from the soft tomato flesh.
Blending the sauce
You push the roasted garlic out of its papery skin directly into the blender pitcher. You drop the peeled tomato and the cleaned bell peppers into the blender. You add the toasted bread and almonds. You pour in the remaining extra virgin olive oil and one tablespoon of sherry vinegar. You add one tablespoon of smoked paprika, one teaspoon of salt, and a quarter teaspoon of optional cayenne pepper.
You run the machine until the mixture is completely smooth. You taste the finished sauce and add salt and pepper to suit your preference.
Serving options
This thick sauce works cold or warm. You can serve it in many different ways.
- Use the sauce as a dip for fries, crackers, potato chips, and raw vegetable sticks.
- Spread the sauce onto sandwiches, burgers, or crostini.
- Toss the sauce with cooked pasta as an alternative to pesto.
- Serve the sauce alongside cooked seafood, barbecued meats, or roasted vegetables.
- Stir the sauce into soups or stews.
- Use the sauce as a marinade or crust for roasting chicken.
- Spoon the sauce warm over cooked eggs and chorizo with a side of crusty bread.
Leftovers
You can keep any leftover sauce in a sealed container in the refrigerator. It stays safe to eat for a maximum of seven days.
Spanish Romesco Sauce: A Magic Dip with Roasted Almonds
Ingredients
- 2 red bell peppers
- 1 tomato
- 5 garlic cloves
- 0.5 cup natural almonds
- 3 tbsp extra virgin olive oil
- 2 slice white sandwich bread, crusts removed
- 1 tbsp sherry vinegar, or red or white wine vinegar
- 1 tbsp smoked paprika
- 1 tsp salt
- 0.25 tsp cayenne pepper, optional
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Method
Substitutions
You can replace the fresh red bell peppers with one and a half cups of drained jarred chargrilled peppers.
Since jarred peppers add more sourness to the dip than fresh ones do, you should hold off on pouring the vinegar into the blender pitcher. Puree the ingredients first, and then mix in the vinegar gradually until the flavor is right.
Any type of bread works for this recipe, but standard white sandwich bread blends more smoothly into the sauce than artisanal loaves.
Storage
You can easily make this Spanish Romesco sauce ahead of time and keep it refrigerated for up to one week.
Serving
Try tossing this sauce with pasta as a rich alternative to pesto or applying it as a flavorful crust for roasting chicken.
Serve it as an appetizer dip with potato chips and raw vegetable sticks, or spread it onto sandwiches and crostini.
Techniques
When an open gas burner or outdoor barbecue is unavailable, roast the whole bell peppers directly on the oven rack at the highest heat setting for 20 to 30 minutes to achieve a black char.
A tightly covered bowl traps steam from freshly roasted vegetables to make peeling their skins much easier.
Always let hot ingredients cool slightly before running them through a blender to prevent trapped steam from blowing the lid off.
- Store
- You can easily make this Spanish Romesco sauce ahead of time and keep it refrigerated for up to one week.
Can I use jarred roasted red peppers instead of charring fresh ones?
You can substitute 1.5 cups of drained, tightly packed jarred chargrilled peppers for the fresh ones. Because jarred peppers are quite sour, leave the sherry vinegar out before blending and only add it to taste at the very end.
Do I have to use white sandwich bread?
Any type of bread works for this recipe. However, standard white sandwich bread breaks down more cleanly in the blender and creates a smoother texture than artisanal loaves.
How long does this Spanish Romesco sauce last?
You can keep any leftover sauce in a sealed container in the refrigerator for a maximum of seven days.
Can I freeze this sauce?
Yes, you can generally freeze oil and vegetable purées in an airtight container for up to three months. If the oil separates slightly after thawing, just give it a vigorous stir to bring the texture back together.
How should I serve Spanish Romesco sauce?
It makes a fantastic cold dip for potato chips and raw vegetable sticks, or a great spread for sandwiches and crostini. You can also serve it warm tossed with pasta, spooned over grilled seafood, or applied as a flavorful crust for roasting chicken.
How can I blacken the bell peppers without an open gas flame?
You can roast the whole bell peppers directly on your oven rack at the highest heat setting for 20 to 30 minutes. An outdoor barbecue grill on high heat also works perfectly to blacken and blister the skins.
Why do I need to rest the hot peppers in a covered bowl?
A tightly covered bowl traps steam radiating from freshly roasted vegetables. This trapped moisture softens the exterior and loosens the skins, making them much easier to peel.
Can I blend the roasted vegetables straight out of the oven?
Always let hot ingredients cool slightly before running them through a blender. Blending piping hot food creates trapped steam that can blow the lid off the machine.
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