Baked Pear Crumb Doughnuts

Ingredients

• 1 cup all-purpose or white whole wheat flour
• ¾ teaspoon baking powder
• ½ teaspoon baking soda
• ½ teaspoon ground cinnamon
• ½ teaspoon ground ginger
• ¼ teaspoon salt
• ½ cup plain, whole milk Greek or skyr yogurt
• ¼ cup packed brown sugar
• ¼ cup canola oil
• 2 large eggs
• ½ teaspoon vanilla extract
• 1 pear, diced (preferably green or red Anjou)
• ½ cup all-purpose or white whole wheat flour
• ¼ cup rolled oatmeal
• 2 tablespoons brown sugar
• ¼ teaspoon cinnamon
• 1/8 teaspoon salt
• 2 tablespoons crushed walnuts
• 4 tablespoons room temperature butter