Brown Butter Glazed Oatmeal Cookies

All the spices and the glaze in these cookies make it perfect for the holidays. One of my favorites!
1/2 c. butter, softened
1/2 c. shortening
1 1/2 c. packed light brown sugar
2 eggs
1/2 c. buttermilk
1 3/4 c. flour
1 t. baking soda
1 t. baking powder
1 t. salt (if using unsalted butter)
1 t. ground ginger
1 t. ground nutmeg
1 t. cinnamon
1/4 t. ground cloves
1/2 t. allspice
2 1/2 c. quick-cooking oatmeal
1 c. raisins
1 c. walnuts, chopped (optional)
1 t. vanilla
Brown Butter Icing:
1/2 c. butter, softened
3 c. powdered sugar
1 t. vanilla
3-4 t. water
Preheat oven to 350. Spray cookie sheets or line with silicone mat or parchment. Cream together butter, shortening, and sugar until fluffy - about 2 minutes. Add eggs and mix well. Add buttermilk. Sift together flour, baking soda, baking powder, salt, ginger, nutmeg, cinnamon, cloves, and allspice; stir into creamed mixture until combined. Fold in oatmeal, raisins, walnuts, and vanilla until well mixed. Drop by rounded teaspoons onto cookie sheet and bake 12-15 minutes. Cool on cookie racks and drizzle with brown butter icing.
Icing: in small saucepan melt butter and heat until it starts to turn golden and smell nutty. Remove from heat and pour into a bowl with powdered sugar and vanilla. Whisk and add enough water to make a drizzling consistancy. Drizzle over cookies and enjoy!