Preheat oven to 350 degrees.
In a large mixing bowl, combine the strawberries, lemon juice, coconut sugar and optional vanilla extract. Toss well.
Pour the berries into a large casserole baking dish. (Around 8 x 11 in size, but it can vary a bit.)
In the same large bowl, combine the oats flour , cinnamon, salt and coconut oil. Pour the oats over top the berries and flatten.
Bake the crisp at 350 degrees for 40 minutes, or until the sides darken and start to look crisp and slightly browned. Serve warm and store leftovers in the fridge.
Garnish with fresh berries and serve! Add vanilla ice cream to make it more decadent.