Schar Gluten-Free Sourdough Multigrain Bread vs Butter

The short answer

Per 100 g: Schar Gluten-Free Sourdough Multigrain Bread has fewer calories; Schar Gluten-Free Sourdough Multigrain Bread has more protein; Schar Gluten-Free Sourdough Multigrain Bread has more fiber; Butter has a lower glycemic index.