Spoon the full-fat quark into a deep bowl. Deliberately choose the full-fat version, as the fats in it keep your blood sugar stable and provide a lasting sense of fullness throughout the morning.
Roughly chop the walnuts with a knife so you have both firm pieces and some fine crumbs. Scatter the nuts along with the chia seeds over the quark and let it sit for a minute if you like so the chia seeds swell slightly.
Dust everything with cinnamon and scatter the fresh raspberries over top. Gently stir together just before eating so the flavors mingle but the walnuts stay crispy.