1. Preheat the oven to 450°. Arrange the bones cut-side up in a roasting pan. Lightly sprinkle the bones with salt, then add the garlic and rosemary to the pan.
2. Roast the bones for about 30 minutes, until the marrow is soft and the dish is bubbling.
3. Serve the bone marrow with the parsley salad and toast. To eat, scoop out the marrow with a small fork or spoon, spread on the toast and top with parsley salad.
*Make the parsley salad by mixing together all ingredients.