Step 1

Filling: Preheat oven to 375°F. In a large bowl, combine rhubarb, apples, granulated sugar, cornstarch, ginger, lemon juice, and salt. Transfer to a 2 1/2-to-3-quart baking dish or 9-by-13-inch baking pan.

Step 2

Biscuit: Whisk together both flours, granulated sugar, baking powder, and salt. Add butter; using your fingers, work it into dry ingredients until largest pieces are the size of small peas. Add cream and almond extract; stir with a fork until a soft, sticky dough forms. Scatter in small clumps evenly over fruit in baking dish. Brush dough with cream. Sprinkle with almonds, then sanding sugar.

Step 3

Bake until cobbler is bubbling in center and biscuits are golden brown, 55 to 60 minutes (if browning too quickly, tent with foil after about 45 minutes). Let cool on a wire rack at least 1 hour before serving warm or at room temperature, topped with more cream.