Heat the oven to 350 degrees Fahrenheit.
Lightly grease 13x9 inch casserole dish. Set aside.
Cut out the tough bottom core of the cabbage. Carefully peel off 12 leaves.
Place cabbage leaves in large pot of boiling water. Boil for 10 minutes until leaves are tender.
Rinse cabbage leaves under cold water to cool. Drain well and set aside.
Grate the remaining cabbage to equal 2 cups. Place in large mixing bowl.
Add cooked, drained quinoa and lentils, yams, grated carrot, stevia, pepper and mustard powder, poppy seeds and lemon juice to the bowl.
Taste and add more seasoning, in very small amounts if desired. Mix well.
In a medium size mixing bowl, combine the tomato paste, water and tomato sauce. Add seasoning and oregano and mix well.
Pour a little sauce in the bottom of the baking dish. Set aside.
Lay cabbage leaves out on your work surface. Place 1/4 cup or 3 tablespoons of the mixture into each leaf. Roll up the ends first, and then the sides. Place in the baking pan.
Continue with each leaf until the casserole dish is full.
Reserving 1/2 cup, pour tomato sauce over cabbage rolls, making sure all are well covered.
Cover with lid or tin foil. Bake at 90 minutes or until cabbage is soft. You can test doneness by inserting a sharp knife.
When cooked, remove from oven, and add remaining sauce if too dry. Serve hot.