Preheat oven to 350ºF and spray 8, 4 ounce ramekins or one 8x8-inch baking dish with coconut oil and set aside.
Toast the almond flour by cooking it in a pan over medium high heat, stirring constantly for about 5 minutes, or until it smells nutty and is lightly golden. Set aside to cool.
Mix berries, half the zest, coriander, half the sweetener (2 tablespoons), and xanthan gum together and stir to combine well and set aside.
In another bowl, combine almond flour, remaining half of zest, remaining sweetener (2 tablespoons), cinnamon, salt, vanilla, and coconut oil and combine well until crumbly.
Place ramekins on a baking sheet and distribute the fruit evenly among them. Top with the crumble.
Bake at 350ºF for 20-25 minutes, or until barely golden brown. Let cool for 5-10 minutes before serving.