The phrase "raspberry jam" refers to a sweet spread made from raspberries that you can put on bread or use in baking. It is called "jam" because the fruits are cooked with sugar to form a thick, sticky mixture. Full definition
This version is made with added almond meal to the dough, which gives it a great taste and texture, and they are filled with raspberry jam. (lilcookie.com)
These are also good with a smear of raspberry jam before adding in the apples. (betterbaking.com)
Next time, I might add a drop of all - fruit raspberry jam in the center of each cupcake for a flavor twist. (elanaspantry.com)