Roast the poblano peppers over an open flame until charred, then steam in a plastic bag for 10 minutes.
Peel the skin off the cooled peppers and remove the seeds.
Sauté onions and garlic in a skillet until translucent.
Add ground beef and pork, cooking until browned.
Stir in diced tomatoes and dried fruits; season with cinnamon, salt, and pepper.
Allow the mixture to simmer for 15 minutes, then remove from heat.
Stuff the roasted peppers with the meat mixture.
Blend walnuts with milk to make a smooth sauce.
Pour the walnut sauce over the stuffed peppers.
Garnish with pomegranate seeds before serving.