In a large skillet, melt the butter. Add the garlic and cook over moderate heat, stirring, until just starting to brown, 2 minutes. Add the kale and crushed red pepper and cook for 2 minutes, tossing. Add the cream and bring just to a slight boil. Simmer over moderately low heat, stirring, until the cream has thickened. Stir in the grated cheese and season with salt and pepper.