Slow Cooker Peanut Butter Cup Swirl Cake

water

large eggs

heaping 1/2 cup creamy peanut butter

unsalted butter, softened

hot fudge sauce (not thin chocolate sauce)

confectioners’ sugar

creamy peanut butter

cream or milk, plus more as necessary for consistency

cup hot fudge

peanut butter cups miniatures, unwrapped and cut in half (minis may be substituted)