Cinnamon Sugar Twist Doughnuts

Ingredients

• 1.5 cups whole milk (warmed to 110°F)
• 1 large egg (room temperature)
• 1 tablespoon active dry yeast (or instant yeast)
• 6 tablespoons unsalted butter (softened, at room temperature)
• 4 cups all-purpose flour
• 2 teaspoons kosher salt
• 1.5 teaspoons ground cinnamon
• 0.5 cup granulated sugar (for coating)
• 3 tablespoons granulated sugar (for dough)
• 1 unit Vegetable oil (for frying)