In mixing bowl, stir together almond meal, sugar substitute, collagen powder, cream of tartar, salt, and baking soda.
Add oil and egg white. Use a spatula to mix until combined and smooth.
Measure out 1 tablespoon of dough at a time and roll into little balls between palms of hands. Mixture will seem pretty oily, but it all gets absorbed during cooking process.
Place dough balls on baking sheet spaced 2” apart. Use back of glass to flatten to about 1/3” thickness and 2” wide. Sprinkle with cinnamon.
Bake for 12 minutes, or until turning golden brown. Let cool on pan for 5 or 10 minutes.