This rustic cranberry skillet cake is inspired by Martha Stewart’s classic American home baking, with a tender butter cake studded with tart cranberries and finished with a crackly demerara sugar top. Baked in a cast-iron skillet, the edges caramelize deeply while the center stays moist and buttery. It is the kind of unfussy, crowd-pleasing dessert that feels right for holiday entertaining or a cozy weekend breakfast.
Store leftover cake tightly covered at room temperature for up to 2 days, or refrigerate for up to 5 days. To freeze, wrap individual slices or the whole cooled cake in plastic wrap and then foil, and freeze for up to 3 months; thaw at room temperature for 2 hours before serving. To reheat, warm slices in a 300°F (150°C) oven for 8 to 10 minutes, or in the microwave for 20 to 30 seconds. The batter can be made and spread in the skillet up to 1 hour ahead and kept refrigerated; add 5 minutes to the baking time if starting from cold.
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