Seen this done many ways, but this is by far my fave!

4 cups rhubarb, chopped
1 cup granulated sugar
1 tablespoon cornstarch
1 cup all-purpose flour
1 cup granulated sugar
1 teaspoon baking powder
1/2 teaspoon salt
1/2 cup butter, melted
1 cup milk
1 teaspoon vanilla extract

Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine the chopped rhubarb, 1 cup of sugar, and cornstarch. Stir until the rhubarb is well-coated and set aside.

In another bowl, whisk together the flour, 1 cup of sugar, baking powder, and salt.

Add the melted butter, milk, and vanilla extract to the flour mixture. Stir until everything is well combined and smooth.

Pour the rhubarb mixture into a greased 9×13 inch casserole dish.

Spread the dough mixture evenly over the rhubarb.

Bake in the preheated oven for 45-50 minutes, or until the top is golden brown and the rhubarb is bubbling.