Preheat the broiler.

Put the butter in a bowl. Press the garlic cloves over the butter and mix well. Add the parsley, season with salt and pepper to taste, and refrigerate.

Open the oysters and put them, in their shells, on a baking sheet filled with coarse salt. Add about 1⁄2 teaspoon of the parsley butter mixture to each oyster and broil for 1 to 2 minutes. Serve immediately with rye bread.