These delicious Grilled Tricolor Hasselback Potatoes with Romesco Sauce are a combination of two of our favorite Spanish dishes: “Patatas Bravas” (roasted potatoes with spicy sauce) and “Romesco”, a traditional Spanish sauce / spread that is served along grilled vegetables, meats or with toasted rustic bread. This dish is vegan and can be served as an appetizer or side dish and can be made for Passover as well.