How To Make Kumquat Coffee Cake - Best Recipe | Charleston Magazine

Ingredients

• 1 stick unsalted butter, browned
• 1 cup packed dark brown sugar
• 1 cup all-purpose flour
• 1/2 tsp. ground cinnamon
• 1/2 tsp. kosher salt
• 2 cups kumquat slices, seeds removed (about 2 lbs. whole kumquats)
• 1¾ cups all-purpose flour
• 2 tsp. baking powder
• 1 tsp. baking soda
• 1/4 tsp. kosher salt
• 1 stick unsalted butter, browned, chilled until firm, and diced
• 1 cup sour cream
• 1 cup sugar
• 1 tsp. pure vanilla extract
• 2 eggs