Blueberry Cobbler | America's Test Kitchen

Ingredients

• 1/2 cup granulated sugar (3 1/2 ounces/99 grams)
• 1 tablespoon cornstarch
• pinch ground cinnamon
• pinch table salt
• 6 cups fresh blueberries (30 ounces/850 grams), picked over
• 1 1/2 teaspoons grated lemon zest
• 1 tablespoon lemon juice
• 1 cup unbleached all-purpose flour (5 ounces/142 grams)
• 2 tablespoons cornmeal , stone-ground
• 1/4 cup granulated sugar , plus 2 teaspoons for sprinkling
• 2 teaspoons baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon table salt
• 4 tablespoons unsalted butter (1/2 stick), melted
• 1/3 cup buttermilk
• 1/2 teaspoon vanilla extract
• 1/8 teaspoon ground cinnamon