Sweet Potato Muffins | Two Jade Bowls

Ingredients

• 3/4 pound sweet potatoes
• 1 cup whole-wheat flour (I used whole-wheat pastry flour)
• 1 cup all-purpose flour
• 1 tablespoon cinnamon
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon kosher or sea salt
• 1/2 teaspoon nutmeg, freshly grated
• 1/4 teaspoon allspice
• 1/2 stick (4 tablespoons) cold unsalted butter
• 1/4 cup white sugar
• 1/4 cup dark brown sugar
• 1 egg
• 1 cup buttermilk
• 1/2 cup plain yogurt (I used labneh)
• 6 large Medjool dates, pitted and finely chopped