Make the peanut butter by combining Pbfit peanut butter powder with water and 1 tbsp maple syrup. Mix in a bowl with a spoon until it forms a paste.
Add the peanut butter paste to a pot followed by 1/4 cup maple syrup and the brown sugar substitute.
Melt over medium heat, switch to a whisk and whisk until everything has melted together and the sugar has dissolved. Pull off the heat.
To a large mixing bowl add oats, Rice Krispie's, protein powder (optional) and peanut butter sauce and mix until combined.
Place mixture in a 2-quart casserole dish and press down into the bottom of the dish.
Melt chocolate chips and pour over the bars. Spread out evenly on top.
Top with flakey salt and allow to harden in the fridge for 2 hours.
Cut into 12 squares.