Roast Beef Sandwich with Walnut Romesco | Saveur

Ingredients

• 1⁄2 cup walnuts, toasted
• 1⁄4 cup olive oil
• 2 tsp. smoked paprika
• 1⁄2 tsp. ancho chile powder
• 1 clove garlic, peeled
• 1 roasted bell pepper, peeled and seeded
• Kosher salt and freshly ground black pepper, to taste
• Garlic aïoli, for serving
• 2 ciabatta rolls, halved lengthwise
• 1⁄2 lb. thinly sliced deli roast beef
• Homemade pickles, for serving