Keto Butter Bar (Dense Layer): 50g unsalted butter, 0.5 egg, 10 packs stevia, 20g isolated soy protein, 15g oat fiber, 5-10g cinnamon.
Mix well.
Preheat air fryer to 170°C and cook for 20-30 minutes.
Refrigerate for 1-2 hours.
Store in freezer and defrost before eating.