Slow-Cooker Superfood Homemade Protein Bars {Vegan}

Mix the flax meal and warm water in a small bowl. Refrigerate for 20 minutes.
Grease a 7-quart slow cooker with coconut oil or cooking spray. Line it with parchment paper, leaving an overhang on all sides for easy removal. For a precise fit, trace the slow cooker's base on parchment paper, and cut it a few inches larger to leave enough overhang.
In a large, microwave-safe mixing bowl, combine the cashew butter and agave. Microwave for 1 to 1 1/2 minutes, or until softened. Beat with an electric hand mixer until smooth.
To the bowl, add the mashed banana, coconut sugar, almond milk, vanilla extract, and chilled flax mixture. Beat until the mixture is smooth and runny.
Add the oatmeal, oat flour, protein powder, cinnamon, baking powder, baking soda, and salt to the wet mixture. Mix until well combined.
Gently fold in the dried blueberries, cacao nibs, and chopped cashews until evenly distributed. Note: The batter will be thick.
Spoon the thick batter into the prepared slow cooker and spread it evenly with a spatula or the back of a spoon.
Cover the slow cooker and cook on low for 2 to 3 hours. The bars are done when the sides are browned, the top is set, and a toothpick inserted into the center comes out clean.
Use the parchment paper overhang to lift the bars out of the slow cooker and transfer them to a cooling rack. Let them cool completely before slicing.