Special equipment: a 9-inch cast-iron skillet or 8-by-8-inch baking dish generously butter a 9-inch cast-iron skillet or 8-by-8-inch baking dish.
Preheat the oven to 375 degrees F. (If using a cast-iron skillet, place it in the oven while the oven preheats.)
Prepare the Fleischmann's Simply Homemade Cornbread Mix according to the package directions using the butter, milk and egg.
Fold in the apricots and mascarpone. Pour into the prepared skillet. Bake until golden brown, about 35 minutes. Serve warm, or at room temperature with jam or fresh berries.