01 -
Grab a bowl and toss in everything for the tangy white sauce: mayo, vinegar, pepper, mustard, salt, sugar, garlic, horseradish, lemon juice, and paprika. Give it a good whisk until smooth as silk. Pop it in the fridge while you work on the rest. This chill time lets all the flavors come together beautifully.
02 -
Pour the oil into a large skillet and let it heat up over medium-high. While it warms, sprinkle salt and pepper on both sides of the chicken. Add the tenders and cook one side for 4 minutes or so, until golden. Flip them over and let them finish cooking, 3 minutes, until they're no longer pink.
03 -
When you turn the chicken over, toss the sliced shallots into the same pan. Move them around now and then so they soften and brown just a little. By the time the chicken's done, the shallots should be tender and slightly caramelized.
04 -
Take the chicken out of the pan and let it sit a bit until it's cool enough to handle. Chop into bite-sized chunks and throw them in a bowl. Add in those caramelized shallots, 1 cup of shredded Monterey Jack, and about 1/2 cup of the tangy white sauce. Stir everything so it's well coated and combined.
05 -
Fire up the broiler. Slice your sub rolls lengthwise, but don’t cut them all the way through! Leave a hinge so you can stuff them easily. Place the rolls, opened up, on a baking sheet and get ready to fill them.
06 -
Take that chicken mix and pack it into the two rolls evenly. Really fill them up—don't hold back! Sprinkle the last 1/2 cup of cheese on top of each stuffed roll for that all-important cheesy finish.
07 -
Slide your baking sheet under the broiler for a quick toast. Watch them like a hawk—2 to 3 minutes tops! Once you see the cheese bubbling and the bread edges toasted, pull them out.
08 -
Lift those hot sandwiches carefully from the baking sheet and drizzle a bit more of that white sauce on top. Slice in half to get four portions. Serve while the cheese is gooey with the sauce on the side for dipping.