Plum Cobbler With Buttermilk Crust

I found this recipe in Glamour.

• Ready In: 1 hr 5 mins
• Serves: 8

Ingredients

• 8  firm ripe plums, pitted and cut into 1/8 inch slices
• 3⁄4 cup sugar
• 1  teaspoon ground cinnamon
• 1  teaspoon vanilla extract
• 1  cup flour
• 2  teaspoons baking powder
• 1⁄4 teaspoon baking soda
• 1⁄4 teaspoon salt
• 1⁄2 cup buttermilk or 1⁄2 cup  whole milk
• 4  tablespoons unsalted butter, melted
•  vanilla ice cream, for serving (optional)

Directions

1. 1. Preheat oven to 400. In a medium bowl, mix the plums, 1/4 c of sugar, cinnamon and vanilla until combined. Spoon into a 1 1/2 - 2 quart ceramic or glass baking dish. Set aside.
2. 2. In another bowl, whisk together the flour, baking powder, baking soda, salt and 1/2 c sugar. Add the buttermilk and melted butter, and mix until just combined, being careful not to overmix.
3. 3. Using a large spoon, dollop the batter onto the plums. (Don't worry about covering the entire surface - the batter will spread when it bakes.)
4. 4. Bake for 25 to 35 minutes or until the cobbler topping is golden and set. Remove from the oven, and immediately sprinkle the top with 1 teaspoons sugar. Serve warm, topped with a scoop of vanilla ice cream, if desired.