Rhubarb 'Big Crumb' Coffee Cake

1. Prepare Rhubarb Filling

Chop the rhubarb into small pieces, then in a bowl, mix it with the granulated sugar, cornstarch, and ground ginger until the rhubarb is evenly coated.

2. Create Big Crumbs

In another bowl, combine the dark brown sugar, granulated sugar, cinnamon, ginger, and salt. Stir in the melted butter, mixing thoroughly. Gradually add the cake flour, stirring until the mixture becomes large, sandy, and clumpy crumbs.

3. Assemble and Bake

Spread the rhubarb filling over the prepared cake batter in a baking dish. Generously sprinkle the big crumbs over the top, ensuring even coverage. Bake in a preheated oven until the top is golden and the cake is cooked through. Let it cool before serving.