Step 1

Preheat the oven to 350°F and grease a 9x13-inch baking dish.

Step 2

Make the filling: In a small bowl, mix together the brown sugar, cane sugar, and cinnamon. Set aside.

Step 3

Make the crumble topping: In a medium bowl, mix together the flour, brown sugar, cane sugar, and cinnamon. Add the butter and use a spatula to combine. Mix until there is no dry flour remaining and the mixture is crumbly. Don’t overmix. Set aside.

Step 4

Make the cake: In a large bowl, whisk together the flour, baking powder, baking soda, and salt.

Step 5

In the bowl of a stand mixer, or using an electric mixer, cream the butter. Add sugar and mix to combine. Add the eggs one at a time, beating well after each addition. Mix in the vanilla. Add a quarter of the dry ingredients and mix, then add a third of the yogurt and mix. Repeat until you have added all the yogurt and dry ingredients, ending with the dry ingredients.

Step 6

Evenly spread half the batter at the bottom of the prepared pan. Sprinkle with the filling. Dollop the remaining batter in spoonfuls across the top of the filling and use a spatula or knife to carefully spread it into an even layer. Sprinkle the crumble topping on top.

Step 7

Bake for 45 to 50 minutes, or until a toothpick inserted comes out clean.