Preheat the oven to 400°F (200°C).
Roast the red bell peppers until the skin is charred and blistered, about 10 minutes. Remove from the oven and let them cool. Peel and seed the peppers.
In a food processor, combine the roasted red peppers, walnuts, bread crumbs, pomegranate molasses, olive oil, lemon juice, ground cumin, paprika, and minced garlic.
Blend until smooth. Season with salt and red pepper flakes to taste.
Transfer the muhammara to a serving dish and drizzle with a little extra olive oil if desired. Serve with bread, crackers, or vegetables.