1 stick butter, softened
2 c. brown sugar
2 eggs
2 c. plain flour
2 tsp. baking powder
2 c. pecans, finely chopped
2 tsp. vanilla
1/8 tsp. salt
1/2 tsp. cinnamon
1/2 tsp. allspice

Cream butter and sugar. Gradually add other ingredients, adding pecans last. Lightly grease and flour 9x13 pan. Spread mixture evenly.

Bake 30-35 minutes at 325°F, or until toothpick inserted in middle comes out dry.