Line an 8" x 4" loaf pan with parchment paper, leaving an overhang on all sides.
In a medium bowl combine the protein powder, oats, cinnamon and salt. In another bowl whisk together the tahini, maple syrup, milk and vanilla.
Pour the wet ingredients into the dry and mix to combine. Transfer to your prepared loaf pan and press in evenly. Freeze for 30 minutes.
Make the topping:
Pour the powdered sugar, 1/2 tablespoon of milk and the vanilla into a small bowl. Whisk, adding more milk a bit at a time if needed, till a thick yet pourable consistency is achieved.
Using the parchment sling to assist, transfer the bars to a cutting board and slice into 8 pieces. Drizzle with the glaze. Chill for 10 minutes to set slightly, then sprinkle with the crushed strawberries.
Store in the fridge up to 1 week or in the freezer for up to 2 months.