Cinnamon Crumb Coffee Muffins

Yield: 12 muffins

Prep Time: 20 minutes

Cook Time: 20 minutes

Total Time: 40 minutes

Ingredients: Directions: Enjoy!!
 * 1 1/4 cup all-purpose flour
 * 1/2 cup sugar
 * 1/4 tsp. baking soda
 * 1/4 tsp. salt
 * 6 pieces softened butter
 * 1 egg
 * 1 egg yolk
 * 1 tsp. vanilla
 * 5 tbsp. yogurt
 * Cinnamon Crumb :
 * 2/3 cup sugar
 * 1 tbsp.cinnamon
 * 1/2 cup butter,melted
 * 1/4 tsp salt
 * 1 1/2 cup all-purpose flour
 * 1) Preheat the oven to 375 degrees F.
 * 2) Lightly spray muffin pans with baking spray or use silicone muffin pan.
 * 3) In a medium bowl, whisk together eggs,yogurt and vanilla.
 * 4) In another mixing bowl, whisk together flour,sugar,baking soda, cinnamon and salt.
 * 5) Add the wet ingredients to the dry ingredients and stir it all together with a wooden spoon, just until combined. Batter should be lumpy.
 * 6) Scoop the batter into the muffin tin. It should fill each cup about 3/4 full.
 * 7) For the Crumb :
 * 8) In a large mixing bowl, whisk together granulated sugar,cinnamon, salt and flour.
 * 9) Add melted butter and stir in until it all comes together.
 * 10) Fluff with a fork to make a mixture that resembles coarse crumbs. Set aside.
 * 11) Sprinkle the topping on top of the batter of each muffin.
 * 12) It may seem like it's a lot of topping but try your best to use it all up.
 * 13) Bake the muffins for 20 minutes or until the toothpick inserted into each muffin comes out clean.
 * 14) Let the muffins cool in the pan for 10 minutes, then transfer onto a cooling rack to cool completely.
 * 15) Store in an airtight container for up to 2 days.