Roasted Mushrooms With Smoky Pomegranate Sauce

Preparation

1. Step 1

   Heat the oven to 425 degrees and set a rack closest to the broiler.

2. Step 2

   Prepare the mushrooms: In a small bowl, stir together the poultry seasoning, granulated onion, salt and pepper. Lightly brush 2 large sheet pans with olive oil to coat. Divide the mushrooms among sheet pans. Drizzle each batch with 2 tablespoons olive oil, then gently toss to coat. Sprinkle the mushrooms evenly with the spice blend and toss to coat again. Tuck the rosemary sprigs among the mushrooms, wrap tightly with aluminum foil and set both sheet pans in the oven to tenderize the mushrooms, about 25 minutes.

3. Step 3

   While the mushrooms steam, prepare the pomegranate sauce: In a medium saucepan, heat the butter over medium until melted. Stir in the shallot, chile, garlic and peppercorns. Season with ¼ teaspoon salt and cook, stirring frequently, until fragrant and softened, about 5 minutes. Stir in the stock concentrate (if using), then pour in the pomegranate juice and cook over medium-high, whisking occasionally, until the liquid is the consistency of maple syrup and thick enough to coat a spoon, 15 to 20 minutes. Strain through a fine-mesh sieve, pushing on the solids to extract any liquid. You should have about ½ cup sauce, which will keep, refrigerated, for up to 2 days.

4. Step 4

   After the mushrooms have steamed, heat the broiler to high. Pull the mushrooms from the oven and remove the foil. Working with 1 sheet pan at a time, return the mushrooms to the rack nearest the broiler and cook, uncovered, until browned and caramelized at the edges, 4 to 6 minutes.

5. Step 5

   Discard rosemary and season mushrooms to taste. Arrange the mushrooms on a serving platter. Drizzle lightly with pomegranate sauce, passing the remaining sauce at the table.