Preheat your oven to 350 degrees Fahrenheit.
In a large bowl, whisk together vegan margarine, sugar, maple syrup, cornstarch, flax, vanilla, and lemon juice until thoroughly combined.
Add flour, oats, ground walnuts, baking powder, salt, and cinnamon. Then, use a spoon to stir together until a crumbly dough forms.
Gently stir in carob or chocolate chips.
Add cold soymilk 1 tablespoon at a time until the dough is soft and malleable, but not soggy wet.
Form 2 tablespoon sized balls with dough, and place on lined cookie sheets, using a fork (or your fingers) to mash into thick patty-like mounds.
Bake cookies for 10 to 12 minutes, or until they are just getting golden brown in the bottoms--you shouldn't see the brown climbing the sides of the cookies.
Cool for 5 minutes before serving.