Place blackberries into a small baking dish small (we used a 9x5 loaf pan)

Pour vanilla extract over the blackberries.

Melt butter and stir together with flour, oats, brown sugar, dash of cinnamon and salt.

Then, combine ingredients using your fingers into crumbles.

Sprinkle crumbles evenly over blackberries.

Bake at 350˚F for 20 minutes.