Romesco is a classic Spanish sauce popular throughout the Mediterranean. Traditionally made from slow-roasted tomatoes, I’m using a jar of roasted red peppers for a quick and punchy accompaniment to the steak and crispy potatoes. Any leftover sauce can be stored in an airtight container in the fridge for a week. It’s also great with chicken or fish, or try stirring through some cooked pasta for a tasty vegan meal.