Preheat the oven to 350 degrees F. Grease a 9x13 baking pan with nonstick cooking spray. Set aside.
In a large saucepan, melt the 5 tablespoons butter over medium heat.
Once the butter is completely melted, add in the 2 tablespoons all-purpose flour the 1 teaspoon cornstarch right on top of the flour, and the 1 ½ tablespoons water off to the side of the flour. Whisk while it cooks for 2 minutes.
Add the 2 teaspoons vanilla extract, ¼ cup granulated sugar, ⅓ cup light brown sugar, 1 ½ teaspoons ground cinnamon, and ⅛ teaspoon ground nutmeg. Stir until everything is combined.
Add in the sliced 5 Honeycrisp apples and stir until they’re coated with the mixture. Let them cook about 15 to 17 minutes until the apples are fork tender.
Pour the hot apple filling into the prepared baking pan. Set aside and work on the cobbler topping.
Cobbler
In a medium mixing bowl, add in the 1 cup all-purpose flour, 2 teaspoons baking powder, ¼ teaspoon salt, and ½ cup granulated sugar. Whisk until combined.
Whisk in the 1 teaspoon vanilla extract and the ¾ cup whole milk until you have a smooth batter.
Pour the cobbler batter on top of the apples.
Sprinkle a little ground cinnamon on top of the batter.
Place in the preheated oven and bake for 40 to 45 minutes until the cobbler topping is golden and the filling is bubbling.
Let cool slightly before serving. Add a dollop of whipped cream or vanilla ice cream!
Store covered in the refrigerator for up to 4 days.
Notes
Storage: Store covered with plastic wrap or in an airtight container in the refrigerator for up to 4 days.