Easy Keto Skillet Blackberry Cobbler

Ingredients:

For the Filling:

2 cups fresh blackberries
1/4 cup granulated erythritol or your preferred keto-friendly sweetener
1 tablespoon lemon juice
1/2 teaspoon vanilla extract
For the Topping:

1 cup almond flour
1/4 cup granulated erythritol or your preferred keto-friendly sweetener
1/4 teaspoon baking powder
1/4 teaspoon salt
4 tablespoons unsalted butter, melted
1/2 teaspoon vanilla extract
1/4 cup unsweetened almond milk