Cut the top and bottom of the onion and remove the paper exterior.
Make a deep cut down the side of the onion (this will make them easier to peel).
Boil the onions for 10 minutes or until the onions soften and the layers can be easily separated.
When the onions are boiling, prepare the filling.
Once softened, remove the onions from the boiling water and allow to slightly cool.
Take 50 grams of the onion bulb (center of onion) and dice.
Combine the ground meat, cauliflower rice, diced onion, tomato paste, spices including fresh parsley and egg (optional) in a large mixing bowl.
Seperate the layers of the onion.
Tightly place the filling in the onion layer and wrap.
Repeat until all of the filling is used.
In a large pan or dutch oven, heat olive oil and butter over medium high heat.
Once pan is hot, gently place the onions seam side down.
Cook for 3-5 minutes until browned.
Mix stevia with vinegar and pour over the stuffed onions.
Placed sliced tomatoes on top of the stuffed onions (optional).
Cover, turn the heat down to medium and cook for 40-50 minutes. Or until onions are soft and filling is cooked. Turn the stuffed onions halfway through.
Enjoy!