Peel and cut apples into 1-inch cubes.
Use enough apples to fill pan.
In a large bowl, combine apple filling ingredients: sugar, flour, salt, and cinnamon.
Add apple cubes and mix thoroughly.
Transfer apple filling into 8-9inch heated and oiled cast iron skillet.
In a bowl combine apple topping ingredients: oatmeal, brown sugar, flour, baking soda, and baking powder.
Mix thoroughly.
Cut cold butter into small pieces and with a pasty cutter or fingers, mix until it looks crumbly.
Pour toppings evenly over apple filling.
Bake in a brick oven at 375° for 40 minutes.
Apple crisp is done when knife can be inserted easily through apples and bubbling around edge of pan.
