Take a large breakfast bowl and weigh the organic quark into it. Break the walnuts by hand into smaller, coarse pieces. Place the remaining measured ingredients within easy reach on the counter to keep the process smooth.
Sprinkle the tablespoon of ground flaxseed and half teaspoon of cinnamon into the quark in the bowl. Stir everything together firmly and thoroughly with a spoon. Make sure the spice and seeds are evenly distributed throughout the dairy and no dry clumps of cinnamon remain.
Distribute the prepared walnut pieces over the mixed quark mixture. You can lightly press these nuts into the surface or simply let them sit as a loose, crispy layer on top.
Serve the quark directly after preparing. You can also let the bowl rest for five minutes first, which allows the ground flaxseed to absorb some moisture from the quark and makes the dish's texture slightly more compact.