Step 1: Preheat the oven to 350°F and grease a 9x13 inch baking dish.
Step 2: In a large bowl, combine the flour, sugar, baking powder, and salt. Mix well.
Step 3: Add in the eggs, milk, melted butter, and vanilla extract. Stir until a smooth batter forms.
Step 4: Pour half of the batter into the prepared baking dish. Spread the filled rhubarb compote over the batter, leaving about 1 inch of space around the edges.
Step 5: Pour the remaining batter over the top of the compote and spread it out evenly.
Step 6: Bake for 45-50 minutes or until a toothpick inserted into the center comes out clean.
### Filled Rhubarb Compote Recipe
Ingredients:
* 1 pound rhubarb, chopped
* 1/2 cup granulated sugar
* 1/4 cup all-purpose flour
* 1/4 teaspoon salt
* 1/2 cup water
* 1 tablespoon unsalted butter
* 1 teaspoon vanilla extract
Instructions:
Step 1: In a large saucepan, combine the chopped rhubarb, sugar, flour, and salt. Stir well.
Step 2: Add in the water and bring to a boil over medium-high heat. Reduce the heat to low and simmer for about 20 minutes or until the compote thickens.
Step 3: Remove the saucepan from the heat and stir in the butter and vanilla extract.
Step 4: Let the compote cool and use it as a filling for your coffee cake.