Black Raspberry Swirled Muffins

I was going to try out another recipe from my muffin book but then I stumbled onto a recipe for Jam Swirled Muffins. I found it on a lovely blog called Technicolor Kitchen-here's the recipe. They are very tasty and I can't wait to try it again with other types of jam. The recipe calls for lemon juice if you need to thin the jam but I used some apple cider. Next time I will go back to my muffin book unless of course I stumble upon another recipe on the net.