Greek-Spiced Baked Shrimp

Ingredients

• 1 medium onion, chopped
• 2 garlic cloves, finely chopped
• 3 tablespoons extra-virgin olive oil
• 1/2 teaspoon hot red-pepper flakes
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground allspice
• 1 (28-ounce) can whole tomatoes in juice, drained, reserving juice, and chopped
• Pinch of sugar
• 1 1/4 pound large peeled and deveined shrimp
• 1/4 pound feta, crumbled (2/3 cup)
• 2 tablespoons chopped dill