1/4 c (1/8 lb.) butter, at about room temp, cut into chunks
1/2 c berry jam
1/2 tsp salt
1/4 c granulated sugar
2 oz cream cheese, at about room temp, cut into chunks
2 1/4 to 2 1/2 c all-purpose flour
1/2 cube fresh yeast (see notes)
Directions
Step #1 In a food processor/blender or a standing mixer fitted with the paddle attachment, salt, whirl or mix 2 c flour & the sugar, yeast, & milk until a sticky dough forms.
Step #2 Add butter & cream cheese & pulse or mix on lowish speed until just mixed.
Step #3 Pulse or increase speed & beat until thoroughly incorporated, about 1 min.
Step #4 Pulse or beat in 1/4 to 1/2 c more flour as needed, 2 tbsps at a time, until the dough begins to pull away from the sides of the bowl (dough will look sticky).
Step #5 If using food processor/blender, scrape dough into a large bowl.
Step #6 Cover up dough & chill at least 12 hrs or up to 1 day.
Step #7 Scrape dough onto a lightly floured surface.
Step #8 Divide in half.
Step #9 With a lightly floured rolling pin, roll each piece into an oval about 12 inches long & 6 inches wide.
Step #10 Spoon jam down center of each.
Step #11 Fold one long side of each oval over jam.
Step #12 Fold other side over, as if folding a letter.
Step #13 Place rolls about 3 inches apart on a buttered or cooking parchment-lined 12- by 15-inch baking sheet.
Step #14 Cover up with plastic wrap; let this stand 30 mins.
Step #15 In a small bowl, mix egg yolk & 2 tbsps water.
Step #16 Brush rolls lightly with egg mixture.
Step #17 Bake in a 350° regular or convection oven until golden brown, 20 to 25 mins.
Step #18 With a wide spatula, transfer to a rack & cool completely.
Step #19 With a serrated knife, cut roll diagonally into 2-inch-wide slices.