Preheat oven to 350°F.

Combine flour, cocoa, baking soda, cinnamon, nutmeg, cloves and salt in a bowl until well mixed.  Beat butter, sugar and brown sugar in a large bowl with electric mixer until creamy. 

Add eggs and vanilla: beat until light and fluffy.  Slowly add flour mixture, beating at low speed just until combined.  Stir in cherries and white chocolate.  Spread in greased 13 x 9-inch pan.  Sprinkle with pecans.

Bake for 30 to 35 minutes or until toothpick inserted in center comes out clean.