In a small bowl, mix together the cream cheese, sugar, lemon juice, vanilla, and salt until smooth.
In another bowl, stir together the plum jam, cinnamon, nutmeg, and cloves.
Assemble the Pastry
Unroll the puff pastry and cut into 6 equal rectangles— Slice in half, lengthwise. Then slice each half into thirds.
If using the suggested mini round cake pan: Use a rolling pin to roll each puff pastry rectangle into more of a squared shape. Place one square into each well of the greased baking pan. Poke a few holes in the bottom of each pastry with a fork.If using a baking sheet: Place the pastry rectangles about 1 inch apart on the parchment-lined baking sheet. Score a ½-inch border around each rectangle, being careful not to cut all the way through the dough. Poke a few holes in the center of each rectangle with a fork.
Spoon about 1 tablespoon of the cream cheese filling into the center of each pastry. (Do not add the plum filling just yet.)
Beat the egg and brush the edges of each pastry with the egg wash.
Place the danishes into the preheated oven and bake for 10 minutes.
Remove from the oven and add about 1 teaspoon of plum filling to the center of each pastry. Gently swirl into the cream cheese filling with a toothpick. Sprinkle the tops with coarse sugar.
Bake for an additional 4-6 minutes or until the pastry is golden brown. Cool slightly before serving, the jam is extremely hot.
Notes
Store leftovers in an airtight container at room temperature for 1-2 days or in the refrigerator for 3-5 days. Reheat in the microwave or air fryer.If you're using the mini-round cake pan and you love cream cheese filling, there is enough room to double the cream cheese mixture. In which case, add about 2 tablespoons of the cream cheese filling to each pastry.