01 -
If you want, toss on some parsley and Parmesan right on top. Slice the little sandwiches apart and hand them out while they're still gooey and warm.
02 -
Leave the foil off now and slide the dish back in for another 5 minutes or so to toast the tops and get a crunchy finish.
03 -
Cover your baking dish with more foil and bake everything for 20 minutes so the cheese melts and the sliders get nice and warm all the way through.
04 -
Pour the buttery mix evenly over all the rolls. Make sure it soaks in everywhere. Let everything hang out for maybe 5-10 minutes so the flavors meld.
05 -
Grab a microwave bowl and melt the butter. Stir in the minced onion, mustard, a bit of Worcestershire, salt, and pepper. Mix til it’s all smooth.
06 -
Lay half the ham on the bottom slab of rolls in the pan. Put all the cheese over this, add the rest of the ham, then pop the top part of the rolls back on and press it down gently.
07 -
Keep the rolls together and slice right through the middle sideways, so you’ve got a big top and a big bottom. Lay the bottom in your foil-lined dish.
08 -
Line your 9x13 baking dish with foil—don’t forget the edges. Give it a quick spray with non-stick stuff so nothing sticks.
09 -
Crank your oven up to 350°F (about 175°C) so it’s hot and ready. This’ll help the sliders get a nice color all over.