Peach Coffee Cake

Bahan-bahan (12 porsi)

• ½ cup butter softened
• 1 cup sugar
• 2 eggs
• 2 teaspoons vanilla extract
• 1 cup all-purpose flour*
• ½ teaspoon baking powder
• ½ cup sour cream
• 2 peaches peeled and finely diced into ¼-⅛ inch pieces (about 1 cup worth)
• ½ teaspoon ground cinnamon
• ⅔ cup all-purpose flour**
• ⅔ cup brown sugar
• ¼ cup butter melted
• ⅔ cup brown rice flour
• ¼ cup tapioca starch
• ¼ cup potato starch
• ½ teaspoon xanthan gum
• ⅔ cup brown rice flour