Preheat the oven to 200°C (about 390°F).
Peel the kohlrabi and slice them into thin rounds. Not paper-thin, but close.
Toss the slices in olive oil, salt, and pepper. Lay them out in a single layer in a greased baking dish.
In a small bowl, mix cream, garlic, and nutmeg. Pour this over the kohlrabi.
Sprinkle the cheese generously over the top. Don’t be shy—it’s what makes this dish sing.
Bake for about 30 minutes or until the kohlrabi is tender and the cheese is golden and bubbling.
Garnish with fresh parsley before serving. Serve warm.