Microwave the mozzarella and cream cheese until it is completely melted. I normally do this in 30-second increments. It takes about 2 minutes. Add the butter. Then the easiest way to make this dough is in a food processor with the dough blade. You can mix and knead by hand if you don't have one. Just mix the baking mix, egg, and gentle sweet into the cheese until it is a uniform color.
Once the dough is thoroughly mixed roll it out between two pieces of waxed paper or parchment paper until it is about a 11x15 inch rectangle that is ⅓ inch thick.
Spread the butter on the rolled out dough. Sprinkle with the sweetener and then the chocolate. Cut into long triangles. I
Roll up the triangles into crescents beginning with the wide end and put them on a parchment lined baking sheet. Bake at 350 until they are golden brown, about 20-25 minutes.
P.S. I messed up on the cutting. I should've made big rectangles and then did diagonal cuts. Learn from my mistake. There is a much better diagram here: https://www.theredheadbaker.com/mini-butter-croissants/Notes on Sweeteners: