Ingredients

• 2 tablespoons unsalted butter, cut into pieces, plus more for the baking dish
• 1 28-ounce can whole San Marzano tomatoes, drained, juice reserved
• 2 tablespoons packed dark brown sugar
• 4 cloves garlic, sliced
• 2 teaspoons chopped fresh parsley
• 2 teaspoons chopped fresh tarragon
• Kosher salt and freshly ground pepper
• Pinch of red pepper flakes
• 6 bunches scallions

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Instructions

1. Preheat the oven to 350 degrees F. Butter a 9-by-13-inch baking dish. Crush the tomatoes into the dish and add 1 cup of the reserved juice. Sprinkle with the brown sugar, garlic, parsley, tarragon, 1 teaspoon salt, 1/4 teaspoon pepper and the red pepper flakes.
2. Cut the white and light green parts of the scallions into 2-to-3-inch pieces and add to the tomato mixture. Roughly chop about 1 cup of the scallion greens and add to the dish along with 1/4 cup water. Dot with 2 tablespoons butter, cover with foil and bake until the scallions are tender, 35 to 40 minutes. Uncover, increase the oven temperature to 450 degrees F and bake until the sauce is thickened, about 20 more minutes.
3. Photograph by Anna Williams