Preheat your oven to 180°C (350°F). Line a baking sheet with parchment paper to ensure easy cleanup and crisping.
Spread a thin layer of butter evenly over each slice of gluten-free bread, covering the surface completely.
In a small bowl, combine the cinnamon and sugar, mixing well to create an even cinnamon-sugar mixture.
Sprinkle the cinnamon-sugar mixture generously over the buttered bread slices, pressing lightly to help it stick.
Arrange the coated bread slices on the prepared baking sheet, ensuring they don't overlap for even crisping.
Bake the slices in the preheated oven for 8-10 minutes, or until the edges are golden brown and fragrant with cinnamon.
Remove the toast from the oven and let it cool slightly—this helps the crunch set and enhances flavor.
Serve the cinnamon sugar toast warm, optionally drizzled with honey or topped with a dollop of yogurt for extra indulgence.