Unsalted Butter Sugar Ground Cinnamon Salt
Preheat oven to 350°F; in a small bowl, mix together butter, sugar, cinnamon, and salt until combined; spread mixture evenly over one side of each of the 4 pieces of bread.
Place bread on a baking sheet and bake for 10 minutes; then turn on broiler and broil toast until deep golden brown and sugar is bubbling.
Watch closely to prevent burning; slice in halves if desired, and serve.