Start by lining a 9x9-inch baking dish with parchment paper to make it easy to lift the bars out once they are set.
In a large mixing bowl, combine 2 cups of super fine almond flour, 1 cup of unsweetened peanut butter, 1/2 cup of melted unsalted butter, 1 cup of sugar-free confectioners sweetener, and 1/2 tsp of sea salt. Mix thoroughly until smooth and cohesive.
Transfer the mixture into the prepared baking dish. Use a spatula to press it down evenly, reaching all corners of the dish.
In a double boiler or microwave-safe bowl, melt 1 cup of sugar-free chocolate chips with 2 tablespoons of butter. Stir until smooth and combined.
Pour the melted chocolate mixture over the pressed peanut butter base, spreading it out evenly with your spatula.
Place the baking dish in the refrigerator for at least 2 hours or until the bars are firm and set.
Once set, remove the bars from the baking dish using the parchment paper. Cut into squares and enjoy your delicious Keto No-Bake Peanut Butter Bars!