To prepare a strawberry crisp, you'll first need to gather your ingredients. You can find fresh strawberries at your local farmer's market, or you can buy them at the grocery store. Cut the strawberries in half lengthwise and scoop out the seeds. Place the cut-up strawberries into the bottom of an 8x8-inch baking dish. Fill the dish with the granulated sugar and stir until the sugar is completely dissolved. Pour in the vanilla and beat until smooth. Add the flour and mix until just combined. Spread the mixture evenly over the pie crust. Bake for 35 to 40 minutes or until browned and bubbly. Remove from the oven and let cool before cutting into squares. Serve with vanilla ice cream or whipped cream.