Step 1

Preheat the oven to 350 degrees F.

Step 2

Place the apples in a 9x13-inch pan.

Step 3

In a bowl, mix the white sugar, 1 tablespoon of the flour, and the ground cinnamon together.

Step 4

Sprinkle the cinnamon mixture over the apples.

Step 5

Evenly pour the water over the apple mixture.

Step 6

In another bowl, combine the oats, the remaining flour, the brown sugar, the baking powder, the baking soda, and the melted butter together.

Step 7

Evenly spread the oat mixture over the apple mixture.

Step 8

Bake the crisp until warm and golden on top, about 45 minutes.

Step 9

Serve the crisp with the vanilla ice cream.