Mix tahini, sweetener, salt and cardamom until you get a thick "paste"
Add rolled oats, chia seeds and plant-based milk to a jar and give it a good stir.
Swirl in the tahini paste and mix again thoroughly.
Put in the fridge overnight or a few hours.
When ready to eat: warm frozen strawberries in a saucepan for about 5 minutes in low heat. You will get a warm gooey strawberry jam, which you can pour on top of your tahini cream oats.
NOTE: if you're using frozen strawberries, you can pop them in the overnight oats jar when you make the oats. They will thaw overnight and make the oats juicy and sweet.
If you're using fresh strawberries: cut them into pieces / slices and mix about half of them inside the overnight oats and use the rest as toppings.