Preheat the oven to 350F.
Whisk together the flour, baking soda, espresso powder, and cinnamon.
In another bowl, whisk together the yogurt, almond milk, maple syurp and vanilla. It won't fully combine, but don't sweat it too much.
Pour the wet ingredients into the dry and mix to get a thick batter.
Pour the batter into an 8x8' baking sheet. Mix together the ingredients for the streusel topping and pour evenly over the batter.
Bake for 20-22 minutes at 350F. While it is baking, whisk together the ingredients for the optional glaze.
Let the cake cool for about 10-20 minutes out of the oven. Top with the glaze and enjoy!