In a food processor or blender, combine the roasted red peppers, roasted almonds, roasted tomatoes, garlic cloves, olive oil, red wine vinegar, smoked paprika, and cayenne pepper (if using).
Blend the ingredients until you achieve a smooth and creamy consistency. If desired, you can leave some texture for added depth.
Taste the Romesco sauce and season with salt and pepper according to your preference. Blend again briefly to incorporate the seasoning.
Transfer the Romesco sauce to a jar or airtight container for storage.
