Walnut Pear Cinnamon Coffee Cake

Ingredients

• 1 cup vanilla yogurt
• 1 3/4 cups flour
• 3/4 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup butter, softened
• 1 cup sugar
• 1 teaspoon vanilla extract
• 2 eggs
• 1 medium ripe pear, peeled,cored &amp,sliced
• 1 teaspoon ground cinnamon
• Crumb mixture
• 1 cup broken walnuts
• 1/3 cup brown sugar
• 1 teaspoon ground cinnamon
• 1/4 cup butter
• 1/3 cup flour
• Cinnamon glaze
• 2 tablespoons vanilla yogurt
• 1 cup confectioners' sugar
• 1/2 teaspoon cinnamon