In large bowl mix together your strawberries, sugar and corn starch until combined, set aside.
In another medium bowl mix together your flour, oats, brown sugar, granulated sugar salt and butter and blend until coarse crumbs form.
Grease a 9-10” cast iron skillet with shortening.
Add in your strawberries and then top with your crumb mixture making sure it is spread evenly over the top.
Bake for about 45 minutes to 1 hour depending on how golden the top gets.
Remove from oven and serve with ice cream if desired.
The calories shown are based on the recipe being divided 6 ways, with 1 serving being 1/6 of the strawberry crisp. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate.