Cream butter and sugar until light and fluffy.
Add eggs, milk and vanilla.
Mix flour, baking powder and salt, add to creamed mixture.
If the dough is sticky, add a bit more flour. Save 1 cup or more for rolling out.
On a floured surface, mix dough with hands so it is smooth and no longer sticky.
Divide into portions; don’t try to work it all at once.
Roll one portion into a 15” by 12” rectangle. Not too thick, these will rise some. I’d say about 1/8”.
Along one edge spread some filling about the thickness of your index finger.
Gently roll dough over to cover filling.
Cut edges and pinch to seal.
Cut into 1 1/2 “ to 2” logs and place on cookie sheets.
Bake at 375 for 12-15 minutes in the middle oven.
Frostwith the glaze I gave you for the cinnamon rolls.
While the cookies are still wet, sprinkle with the colored nonpareils.
Let dry and package in freezer bags.