In a medium saucepan, combine the creamy peanut butter and honey (or maple syrup) over low heat. Stir continuously until the mixture is completely melted and smooth in texture.
Once melted, remove the saucepan from heat. Add the vanilla extract and salt, stirring well to ensure an even distribution of flavor.
In a separate large bowl, combine the rolled oats and almond flour. Pour the warm peanut butter mixture over the dry ingredients, and mix thoroughly until everything is fully incorporated.
If you’re adding them, gently fold in the dark chocolate chips and the chopped nuts, ensuring they are evenly dispersed throughout the mixture for added crunch.
Prepare a square baking dish (8x8 inches) by lining it with parchment paper. Allow a bit of paper to hang over the sides for easier removal later.
Transfer the mixture into the lined baking dish, and use a spatula or your hands to firmly press it down. Ensure the mixture is evenly spread and compacted for the best texture.
Refrigerate the dish for at least 1 hour to allow the bars to set and firm up. Once they are sufficiently chilled and solid, lift them out of the dish using the parchment overhang.
Cut the block into evenly sized bars and store any leftovers in an airtight container in the refrigerator. They will stay fresh for up to a week.
Notes
Arrange the bars on a decorative plate, and consider drizzling some melted dark chocolate over them for an extra touch of indulgence!