In a large bowl combine flour, sugar, baking soda and cinnamon. In another bowl, beat eggs; add milk, yogurt and vanilla. Mix well; stir into dry ingredients until just moistened. Fold in the remaining ingredients. Fill muffin tins sprayed with vegetable spray until 3/4 full.
Bake at 375 degrees for 20 to 25 minutes or until done. (Muffins are done when top springs back when touched with fingertip.)