Jamie Oliver Romesco Sauce is one of the best and easiest sauce recipes ever. This spicy Romesco Sauce is made with roasted red peppers, almonds, sun dried tomatoes, and a blend of other spices. This easy Romesco Sauce pairs well with grilled vegetables, pasta, or as a dip for bread. Also, it can be stored in the fridge for about 7 to 10 days and frozen for up to 3 months. This Romesco Sauce recipe is vegan and gluten free.