Move oven rack to the lower-middle position and preheat oven to 375 degrees F.
FOR THE APPLES:
In a large bowl add the apples, sugar, and lemon juice and toss to combine.
Pour apple mixture into an 8-inch square baking pan, and make sure the apples are evenly distributed. Set aside.
FOR THE TOPPING:
Add the butter, pecans, flour, oats, granulated and brown sugar, apple pie spice, and salt into the work bowl of a food processor. Pulse the food processor until the mixture looks like crumbly sand.
Evenly cover the apples with the topping and bake for 45-50 minutes, or until the toppings deep golden brown and the apple mixture is bubbling. Move apple crisp to a wire rack to cook for at least 15 minutes before serving.
Serve with whipped cream, vanilla ice cream, and caramel sauce (all optional).
The nutritional information is for one serving of the apple crisp recipe. It does not include the nutritional information for optional topping.
This is a great, versatile recipe that you can use with other fruit like peaches, pears, nectarines, or plums.