Preparation:
Preheat oven to 350 degrees F. Position oven rack to center of the oven. Lightly butter a baking dish.
Place blackberries into prepared baking dish. Add the sugar, corn starch, salt, and cinnamon; mix together lightly.
In a bowl, place oats, flour, butter, and brown sugar. Mix together well using either a fork or your bare hands (clumps are good). Place topping mixture over the top of the blackberries.
Bake for 45 minutes until bubbly hot! Remove from oven and allow to set and cool on a wire rack for 20 minutes (if it lasts untouched by family, you're lucky).
In a bowl, make the topping by whisking together the sour cream, vanilla extract, and sugar. Refrigerate until ready to serve.
Serve either warm or room temperature. To serve, top with either chilled sour cream mixture or vanilla ice cream (your choice). Enjoy! Makes 4 servings.
Optional: Add diced apples, peaches, and/or raspberries and combine with blackberries. You can add whatever seasonal fruit you have. Also, homemade granola will work great as a topping in lieu of oats, flour, and sugar mixture before baking.
Blackberry Crisp with Sweet Sour Cream Recipe: https://whatscookingamerica.net/suerobinson/blackberrycrisp.htm