01 - Set your oven to 350°F and prepare a 9x5-inch loaf pan by greasing and flouring, or lining with parchment paper.
02 - In a large mixing bowl, sift together the flour, sugar, baking powder, baking soda, cinnamon, and salt until evenly blended.
03 - In a separate bowl, whisk together the milk, eggs, melted butter, vegetable oil, and vanilla extract until smooth and fully incorporated.
04 - Pour the wet ingredients into the dry ingredients. Fold gently using a spatula until just combined—be careful not to overmix as this will toughen the bread.
05 - Transfer the batter to the prepared loaf pan. Use a spatula to spread evenly and smooth the top surface.
06 - Place in the oven and bake for 45 to 55 minutes, or until a toothpick inserted into the center emerges clean without any wet batter.
07 - Allow the bread to rest in the pan for 10 minutes to set. Then carefully remove and transfer to a wire cooling rack.
08 - While the bread is still warm, brush the entire top surface with melted butter. In a small bowl, combine the sugar and cinnamon, then sprinkle generously over the buttered surface.
09 - Let cool completely for clean, even slices, or serve slightly warm to enjoy that fresh donut shop experience.