Rhubarb Strawberry Pudding Cake - Brennans Market

Ingredients

• 1/4 cup water
• 1 1/2 teaspoons cornstarch
• 1/3 cup plus 1/2 cup sugar
• 2 cups (about 10 oz) chopped fresh rhubarb stalks
• 1 cup (about 5 ounces) chopped fresh strawberries
• 1 cup all-purpose flour
• 1 3/4 teaspoon baking powder
• 1/2 teaspoon salt
• 1 large egg
• 1/2 cup whole milk
• 1 stick (1/2 cup) unsalted butter, melted and cooled slightly
• 1 teaspoon pure vanilla extract