Add the sliced apples to a 13x9-inch baking dish. Drizzle the lemon juice over the apples.
In a bowl, whisk together the brown sugar, granulated sugar, flour, and apple pie spice. Sprinkle this over the apples and then stir to coat. Spread the apple mixture evenly across the bottom of the pan, then pour the water or apple juice over the apples.
Make the topping: In a medium bowl, stir together the Bisquick mix and sugar. Stir in the milk until just combined. Evenly dollop the topping over the apple filling. Sprinkle the topping evenly with coarse sugar.
Bake for 45-50 minutes or until the topping is golden brown and the filling is bubbling around the edges.
Serve warm with vanilla ice cream or a dollop of whipped cream.
Notes
I used a mix of granny smith apples and pink lady apples.I like to use Sugar in the Raw Natural Cane Turbinado Sugar for my coarse sugar. If you do not have coarse sugar on hand, you could use a bit of granulated sugar or even cinnamon sugar.