• Preheat your oven to 350℉. Line an 8x4.5-inch metal loaf pan with parchment paper.
• Place the sugar in the bowl of your mixer, add the eggs and mix until the sugar is dissolved a bit and smooth. With the mixer running on low, drizzle in the oil and vanilla mix until well combined. Add the yogurt and milk and mix to blend well.
• Whisk together the flour, baking powder, baking soda and salt.
• Add the flour mixture and mix until just combined, do not overmix. Set the batter aside to rest for 30 minutes

Make the streusel filling/topping

• In a small bowl, whisk together the flour, maple sugar, cinnamon and salt.
• Cut or rub in the butter until completely incorporated. The mix should be crumbly and hold together in clumps when squeezed between your fingers.
• Spoon half of the batter into the prepared pan, spread it out evenly and sprinkle with half of the streusel mixture. Add the remaining batter and top with the remaining streusel.
• Bake for 45-55 minutes until a skewer comes out clean. If it starts to get too dark and isn't done yet, tent with foil and continue baking,

  Transfer the pan to a rack to cool for about 10 minutes. Lift the bread out of the pan and let cool completely on the rack.
• This bread is best sliced with a sharp serrated knife.