Pumpkin Spice Coffee Cake

0 Preheat your oven to 350°F. Grease a 9-inch round or square baking pan and set aside.
1 In a medium bowl, whisk together the flour, salt, cinnamon, pumpkin spice, baking soda, and baking powder.
2 In a large mixing bowl, cream the softened butter with the granulated sugar and brown sugar until light and fluffy. Beat in the egg and vanilla extract until well incorporated. 
3 Add the pumpkin puree and Greek yogurt to the wet mixture, mixing until fully incorporated.
4 Gradually add the dry ingredients to the wet ingredients, mixing just until combined. Be careful not to overmix.
5 Spread the cake batter evenly into the prepared baking pan.
6 In a medium bowl, combine the flour, brown sugar, and cinnamon. Add the cold, cubed butter and use a pastry cutter or your fingers to work the butter into the dry ingredients until the mixture resembles coarse crumbs. Set aside.
7 Bake in the preheated oven for 35-40 minutes, or until a toothpick inserted into the center of the cake comes out clean or with a few moist crumbs.
8 While that is baking, make your glaze. Once the cake has cooled for 10 minutes drizzle the vanilla glaze over the cake.