Break 3 Biscoff cookies in half, and press the jagged edges of each half, directly into the yogurt, until only the tip of the cookies is popping up out of the top of the yogurt.
Cover well with another piece of foil or plastic wrap, then place the yogurt cub in the refrigerator for at least 4 hours.
For the Large Tub:
Open the tub without fully removing the foil covering.
Press 6 Biscoff cookies in a row, straight into the tub of yogurt, and push them down until only the very tip is showing. Filling in major white space is what you’re mainly going for, it doesn’t have to be perfect.
If desired, you can remove half of the yogurt, place one layer of 6 cookies, then replace the yogurt you removed and add another layer of 6 cookies to ensure full cookie coverage, from top to bottom.
Cover well with another piece of foil or plastic wrap, then place the tub pf yogurt in the refrigerator overnight.
Notes
Notes for Big Tub of Yogurt:For the big tub, I found the cookies didn’t reach fully to the bottom. This is why you may prefer a two-layer approach when adding the cookies. Biscoff also sells extra large cookies that are longer, so would go deeper into the tub, so you wouldn't have to scoop half of it out to get even cookie distribution.