Ten minutes of work, then the freezer does the rest. Use thick strained Greek yogurt rather than a thin Greek-style one, or the bark freezes icy and hard. Take it out five minutes before eating and it snaps cleanly.

Two pieces have about 10g of protein for around 140 calories, which makes this a genuinely filling snack rather than a treat that leaves you hungry. Strained Greek yogurt carries roughly twice the protein of ordinary yogurt, plus calcium.
Why the thick yogurt matters. Thin yogurt contains more water, and water freezes into ice crystals. Thick yogurt and a little fat keep the bark creamy. For the same reason, do not use fat-free yogurt with added water or starch.
The honest part is the honey. Honey is a free sugar, the kind the NHS says adults should keep below 30g a day. Here 2 tablespoons across six servings comes to about 4g per serving, plus the natural sugar in the yogurt and fruit. You can leave it out entirely if your berries are sweet.
Berries bring fibre and colour; pistachios add crunch, protein and unsaturated fat; and a little dark chocolate goes a long way.
For women around menopause, protein and calcium spread across the day both support muscle and bone: see bone health after menopause. For a snack you can eat straight from the fridge, try Greek yogurt with cherries and walnuts.