Combine the peanut butter, sweetener and egg together in a large mixing bowl. Add a pinch of salt if required. Stir until combined. Gently fold through the chocolate chips.
Using a large tablespoon, scoop out and shape your dough balls, flattening each ball into a cookie shape. Place onto a baking tray lined with baking paper.
Bake cookies for about 10-12 minutes or until cookies brown slightly. Remove from oven and allow to cool on the tray. Store in an airtight container.
Feel free to use any nut butter in lieu of the peanut butter. Peanut butter can be smooth or crunchy.Any sweetener will work but make make sure you reduce the sweetener to about 2 tablespoons if it is a more concentrated sweetener.Sprinkle additional chocolate chips on top just prior to cooking if you want to add a real chocolate boost to your cookie.Use chocolate chips of choice. My preference is to chop up a Lindt 85% dark chocolate bar. It's more rustic but I find you can struggle to source sugar free dark chocolate chips without loads of sugar.