Line a 9x5 loaf pan with parchment paper. In a medium bowl, stir together almond flour, almond butter, and maple syrup until incorporated. Add vanilla extract and a pinch of salt and stir.
Fold in the chocolate chips, if using.
Transfer the dough into a loaf pan. Press into an even layer.
Refrigerate for at least 2 hours until firm. Remove from the pan and slice into bars.
Notes
To store: Keep bars in an airtight container in the fridge for up to 5–7 days, or freeze for up to 3 months for longer storage.For the best texture, use smooth, natural almond butter that has been well stirred. The ingredients should mix without needing heat.If taking bars on the go, slice them in half. They will travel better this way. To make these completely refined sugar-free, omit the chocolate chips.