Toss the lemon zest and raisins together in a small bowl and set aside.
Mix the flour and spices together in a large bowl.
Set aside.
Mix all the remaining ingredients together in a small bowl.
Add the liquid mixture to the flour mixture, stirring until just blended.
Stir the raisin mixture into the batter.
Mix only until the raisins are distributed throughout the batter.
Pour the batter into a greased 9-inch-square baking pan and bake in a 350°F oven for 20 minutes or until a toothpick inserted in the center comes out clean.