Pumpkin Streusel Muffins - My Homemade Heaven

Name: Pumpkin Streusel Muffins
Yield: 15
Ingredients: 1 1/2 cups Pumpkin puree; 2 Eggs, large; 2 tbsp Maple syrup, pure; 1 tsp Baking soda; 3/4 cup Brown sugar, packed; 2 tsp Cinnamon, ground; 1 1/2 cups Confectioners' sugar; 2 1/2 cups Flour; 3/4 cup Granulated sugar; 2 tsp Pumpkin spice; 1/2 tsp Salt; 1/2 cup Oil; 6 tbsp Butter; 3/8 cup Milk or milk substitute