Blend the cottage cheese smooth.
Use an immersion blender directly in a bowl/container until fully creamy (no curds). If you're using a denser cottage cheese, this takes longer - keep going until it's smooth.
Mix in PBfit + sweetener.
Add PBfit and sweetener and mix until a thick dough forms. (If using a hand mixer, use dough beaters/paddles if you have them - a whisk-style attachment can struggle because the dough gets thick.)
Fold in chocolate chips.
Stir in the chips with a spoon or spatula.
