In a large mixing bowl, combine the almond flour, rolled oats, cocoa powder, and salt. Stir well to distribute the dry ingredients evenly.
In a separate bowl, mix the peanut butter and honey (or maple syrup) until smooth. If desired, slightly warm the mixture in the microwave for about 10-15 seconds to make it easier to combine.
Pour the peanut butter and honey mixture into the dry ingredients, and blend together using a spatula or your hands until the mixture is well combined and sticky.
Line an 8x8 inch baking dish with parchment paper, leaving some overhang for easy removal later.
Transfer the mixture to the lined baking dish and press it down firmly using the back of a spatula or your fingers, spreading it evenly.
In a small microwave-safe bowl, melt the dark chocolate chips and coconut oil together in the microwave in 30-second intervals, stirring in between until smooth.
Pour the melted chocolate over the pressed mixture in the baking dish, spreading it out evenly with a spatula.
Place the baking dish in the refrigerator for about 1-2 hours, or until the bars are firm to the touch.
Once set, carefully lift the bars out of the dish using the overhanging parchment paper and cut them into squares or rectangles.
Notes
Arrange the bars on a serving platter, dust with a light sprinkle of cocoa powder, or drizzle with extra melted chocolate for an elegant touch.