Prepare Oat Flour: Start by blending your gluten-free quick oats in a blender until they become a very fine flour. This creates the perfect base for your bars.
Mix Dry Ingredients: In a large bowl, combine your freshly made oat flour, vanilla protein powder, pumpkin pie spice, cinnamon, and a tiny pinch of salt. Whisk them together until evenly mixed.
Combine Wet Ingredients: In a separate bowl, gently melt the cashew butter (a quick zap in the microwave works wonders!). Stir in the pumpkin puree, honey, and vanilla extract until everything is smooth and well blended.
Bring It All Together: Pour the wet mixture into the bowl of dry ingredients. Stir thoroughly until you have a thick, uniform dough. It should be easy to work with.
Press into Pan: Line a standard bread loaf pan (around 9x5 inches) with parchment paper, leaving a slight overhang on the sides for easy removal. Press your protein bar dough firmly and evenly into the bottom of the pan using the back of a spoon.
Add White Chocolate Drizzle: In a small, microwave-safe bowl, melt the white chocolate chips and coconut oil together. Heat in 15-second intervals, stirring after each, until completely smooth. Drizzle this melted white chocolate evenly over the pressed bars.
Chill and Slice: Place the pan in the refrigerator for at least 1 hour to allow the bars to set and firm up. Once chilled, lift the entire block out of the pan using the parchment paper, then slice it into 6 to 8 delicious pieces. Store any remaining bars in an airtight container in the fridge for a quick, healthy snack anytime!