Combine the flour, sugars, baking powder, and salt in a bowl
In another bowl mix together the egg, milk, melted butter and vanilla
Add the liquid into the dry ingredients, stirring just until moistened
Put half the batter into the greased muffin cup. Add a generous 1 tsp jam in center of each muffin and then fill the muffin cup with the remaining batter. Muffin tin should be about 2/3 full.
Bake at 400 degrees for 20 minutes or until a toothpick comes out clean
Cool for 5 minutes and then remove from pan onto a rack
Video
Notes
To make mini muffins, follow recipe as directed, and pour batter into a mini muffin tin. Shorten the baking time to about 9-11 minutes.Muffins are easy to freeze. After they have cooled, just put them in an airtight container. They will last up to 3 months in the freezer. You can thaw them at room temperature and then warm them in the microwave for about 20 seconds.