Bascially you saute the onions & garlic in some oil, add in the tomato paste, thyme & rosemary and stirr for a bit. Deglaze the pan with some of the stock.
Add in the dried lentils, bay leaf, & sweet praprika. Pour in the remaining stock and simmer down until the lentils are soft.
Once this is done add in the tahini, balsamic vinegar & soy sauce.
Stir these in until well incorporated.
Turn off the mix to cool while making the mash topping.