Roast the Peppers: Place the red peppers on a baking sheet and roast them in the oven at 400°F (200°C) for about 20 minutes, turning occasionally, until the skins are blackened and blistered. You can also use a grill for this step for an added smoky flavor.
Peel and Blend: Once the peppers are cool enough to handle, peel off the charred skins. Then, blend the roasted peppers with garlic, olive oil, smoked paprika, cumin, lemon juice, and salt until smooth and creamy.
Simmer: Transfer the blended sauce to a saucepan and simmer on low heat for about 5 minutes to allow the flavors to meld together.
