Preheat the oven to 375 degrees. Butter a large baking dish then place it on a baking sheet.
Combine the strawberries and sugar together until well combined. Add the cornstarch and vanilla extract; mix very well. Pour into the baking dish.
Make the crisp topping by combining the oats, flour, brown sugar, white sugar, cinnamon, and salt; mix until well combined. Add the bits of softened butter then using your fingers, cut the butter into the mixture with a pastry blender or your fingers until pea size clumps form. Sprinkle the mixture over the top of the strawberry mixture.
Place into the oven and bake for 35-40 minutes, or until the topping is golden brown.
Remove from the oven and allow to cool for 15 minutes. Serve with scoops of vanilla ice cream or whipped cream. Enjoy!