Mix all dry ingredients together in a bowl.
Combine liquid ingredients together in a separate bowl; keep raisins in reserve.
Stir liquid ingredients into dry ingredients all at once; add raisins and stir until thoroughly moistened. Batter should appear lumpy.
Fill muffin tins lined with paper or foil cups about 2/3 full. Bafe at 400 degrees F for 20-25 minutes.