Add oat flour, ground almonds, protein powder and cinnamon to a bowl and mix
Mix the almond butter and maple syrup in separate bowl until combined (melt slightly in microwave if the nut butter is stiff)
Add almond butter/maple mix to the oat flour mix and stir continuously until it comes together into a dry dough-like mix
Line your dish/tray with baking parchment and press the biscuit base into the dish until spread evenly and compact. Use your hands to flatten or the bottom of a glass/cup. Put in the fridge to set