Place the butter and almond butter in a large microwave-safe bowl. Microwave for 30-45 seconds until melted and stir to combine.
Add the maple syrup, vanilla, cinnamon and sea salt and mix. Stir in the egg until smooth.
Mix in the oats and flax then fold in any add-ins.
Press the mixture firmly into a lined 9x9 inch baking pan. Bake for 25-30 minutes until lightly browned on the edges.
Remove from the oven, cut into bars and allow to cool completely in the pan.
Enjoy!
Notes
LeftoversStore leftover bars in an airtight container at room temperature for up to 3 days, refrigerate for up to 1 week or freeze for up to 3 months.*Nutrition calculated with ¾ cup of raisins as add in.