Cook the thinly sliced bacon strips of bacon over MEDIUM LOW heat until golden. Remove to a paper towel to drain. Crumble them once cooled. Use 2/3 of this in the potato mixture.
Drain off the bacon grease, leaving a slight residue to briefly saute the onions until translucent. Remove and set aside.
Combine the mashed potatoes, cheese, flour and Dijon along with the salt, pepper, onion and crumbled bacon.
Using a large scoop, create about 9 mounds of potatoes.
Pour Panko crumbs onto a flat dish. Gently press one mound at a time into the crumbs. Flip it over and press the other side into the crumbs, flattening it out slightly. Place them on a parchment paper-lined pan. Place in the refrigerator for about 20-30 minutes to set.
Place about 1/2 inch of olive oil in the same small skillet. Heat it to 350°F. This was just under medium heat on my range.
I placed 3 in the skillet at a time. Do not overcrowd! Cook 1 minute per side. Place on paper towels to drain off any excess oil.
Garnish and serve warm.