Heat oven to 350F. Place all ingredients in blelnder container in order listed. Cover and blend on high speed, stopping blender occasionally to scrape sides, 45 seconds.(Batter will be slightly lumpy). Pour into paper lined medium muffin cups, 2 1/2x 1 1/4 in., filling each 2/3 full. Bake until wooden pick inserted in center comes out clean, 25 to 30 minutes. Immediately remove from pan; cool completely.