Preheat your oven to 400°F and line or spray your muffin tin. In a small bowl or ramekin, make a flax egg by stirring 1 tablespoon of flaxseed meal into 2 tablespoons of cold water and set aside. 1 tablespoon flaxseed meal in 2 tablespoons water
In a large mixing bowl, whisk together flour, baking powder, salt, and sugar.
1 ½ cups all-purpose flour, 2 teaspoons baking powder, ½ teaspoon salt, ¾ cup granulated sugar
Add oil, vanilla extract, non-dairy milk, and flax egg and whisk until combined, ensuring there are no lumps of flour or baking powder.
⅓ cup oil, 2 teaspoons vanilla extract, ½ cup unsweetened non-dairy milk
Fold in about 3/4 of your chopped blackberries to the batter, conserving the rest to sprinkle on top.
6 ounces fresh or frozen blackberries, chopped
Fill each cup or liner about 3/4 of the way, leaving a little room for them to rise. Sprinkle the rest of your blackberry pieces on top and bake for 15-17 minutes, until a toothpick comes out clean. Allow to cool completely before enjoying!