Makes 24 bars

Makes 24

This recipe easily doubles. Make sure to cool the baking sheets between batches.

Makes sixteen 2-inch bars

Using three types of citrus (orange, lemon, and lime) gives these bars a slightly more complex, floral flavor.

Makes sixteen 2-inch bars

If you cannot find fresh Key limes, use regular (Persian) limes. Do not use bottled lime juice. Grate the zest from the limes before juicing them, avoiding the bitter white pith that lies just beneath the outermost skin. The optional coconut garnish adds textural interest and tames the lime flavor for those who find it too intense. The recipe can be doubled and baked in a 13- by 9-inch baking pan; you will need a double layer of extra-wide foil for the pan (each sheet about 20 inches in length) and should increase the baking times by a minute or two.

Serves 6 to 8

While the blueberries are baking, prepare the ingredients for the biscuit topping, but do not stir the wet into the dry ingredients until just before the berries come out of the oven. A standard or deep-dish 9-inch pie pan works well; an 8-inch-square baking dish can also be used. Vanilla ice cream or lightly sweetened whipped cream is the perfect accompaniment. To reheat leftovers, put the cobbler in a 350-degree oven for 10 to 15 minutes, until heated through.