01 - Preheat oven to 400°F or set toaster oven to medium-high.
02 - Combine granulated sugar, ground cinnamon, and salt in a small bowl. Stir until evenly mixed.
03 - Spread softened butter evenly over one side of each bread slice.
04 - Sprinkle cinnamon sugar mixture generously over the buttered sides of the bread.
05 - Place bread slices on a baking sheet with sugar side facing up.
06 - Bake for 5 to 7 minutes until edges are golden and sugar is melted and bubbly.
07 - Remove from oven and let cool for 1 to 2 minutes. Serve warm.