Preheat Oven: Preheat the oven to 350°F (175°C) and line a baking dish with parchment paper.
Combine Dry Ingredients: In a large bowl, mix rolled oats, caramel-flavored protein powder, and salt.
Prepare Wet Ingredients: In a separate bowl, whisk together coffee, honey, nut butter, and vanilla extract until smooth.
Mix Together: Add the wet ingredients to the dry mixture, stirring until everything is evenly combined.
Add Extras: Fold in chocolate chips if using.
Spread in Dish: Press the mixture into the lined baking dish, spreading evenly.
Bake: Bake for 30 minutes, or until golden brown on top. Cool, then cut into bars.