• Preheat oven to 350℉ and grease an 8x8 casserole dish or deep pie dish with butter.

Make the Crisp

• In a medium mixing bowl add sugar, brown rice flour, almond flour, cinnamon, nutmeg, and salt. Whisk together.
  
• Add cubed butter. Using either a pastry cutter or your hand, cut in butter until a coarse crumb forms. You want all of the ingredients to come in contact with the butter. I like to squeeze it together with my hands to achieve this.
  
• Add the rolled oats. Squeeze the mixture until moist clumps form.
  
• Add the chopped walnuts and squeeze a few additional times to incorporate them. The mixture should still resemble moist clumps.
  

Make the Apple Filling

• In a large mixing bowl add sugar, brown rice flour, cinnamon, salt, and nutmeg. Whisk together.
• Peel and dice apples about ¼" dice.
  
• Add apples to sugar, flour, and spices mixture. Use a spatula and stir until the apples are evenly coated.

Assemble the Apple Crisp

• Pour apple mixture into the greased baking dish and spread out evenly.
  
• Place cubed butter evenly on top of apple mixture.
• Sprinkle evenly with crisp mixture.
  

Bake

• Place in preheated oven and bake 45 minutes until golden and bubbly. Allow to cool 10 minutes and enjoy!