I found these on another blog and tried them out. I love them! Awesome.
2 c flour
1 T baking powder
1/2 t salt
1 c sugar
1/4 c butter, melted and cooled
1 1/4 c sour cream
approx 2-3 T jam (any flavor)
1/4 sugar (optional)
1 t cinnamon (optional)
Whisk flour, powder and salt in a bowl. In another bowl, whisk egg for 30 seconds. Add sugar and whisk until thick and homogeneous. Add melted butter and mix well. Add sour cream in two steps, whisking until just combined (don't over-mix!). Add dry ingredients to wet and fold in with a rubber spatula. Once mixed, add in jam and mix or swirl as desired. Divide evenly into 12 muffin cups (they will be kinda full and the batter should be thick). Sprinkle cinnamon/sugar mixture on top if desired. Bake at 350 for 25-30 mins, turning half-way through.
To Freeze: Cool completely. Throw muffins into a baggie and freeze. Re-heat in the microwave for a few minutes.