Preheat oven to 220 degrees F (104 degrees C). Arrange walnuts and pecans on a baking sheet.
Bake in the preheated oven until nuts are roasted and fragrant, about 30 minutes. Remove nuts from oven. Increase oven temperature to 230 degrees F (110 degrees C). Grease a 9x13-inch pan.
Pulse roasted walnuts, roasted pecans, and almonds together in a food processor until mixture is resembles a coarse meal; transfer to a large bowl. Add pumpkin seeds, cranberries, protein powder, dates, raisins, coconut flour, maple syrup, coconut oil, vanilla extract, cinnamon, and molasses; mix well. Press mixture into the prepared pan.
Bake in the preheated oven until golden brown, about 40 minutes.
