Preheat your oven to 350 degrees F (176 C) and line an 8 x 8-inch baking pan with parchment paper. Set aside.

CAKE BATTER: To a medium mixing bowl, add the cane sugar and softened vegan butter. Using an electric mixer, beat on medium/high speed until light and fluffy. Next, add eggs and beat until pale yellow and fluffy. Add dairy-free yogurt and mix again. Finally, add gluten-free flour, almond flour, baking powder, and sea salt and mix until fully incorporated. The batter will be very thick — somewhere between cake batter and cookie dough.

Spread half of the batter on the bottom of your parchment-lined baking pan and sprinkle the top with 1 ½ Tbsp of brown sugar and 1 ½ tsp cinnamon. Spread the remaining batter on top of the cinnamon sugar, scraping the bowl clean.

TOPPING: To the same (now empty) mixing bowl, add the gluten-free flour, vegan butter, brown sugar, cinnamon, and salt and mix on low speed until fully combined. It should look crumbly.

Sprinkle the crumble topping evenly over the top of the coffee cake. Bake for 38-42 minutes, until a toothpick inserted comes out clean with only a few crumbs left on the toothpick. Let cool in the pan for 15 minutes before removing and cooling for another 15. Enjoy warm or at room temperature.

Store leftover coffee cake in an airtight container at room temperature for up to 2-3 days. To freeze, place cake slices in an airtight container and freeze for up to 1 month. Let come to room temperature to defrost.