01 -
Heat up a large pan over medium heat. Add the onions and ground beef. Stir every now and again until the beef's cooked through and the onions go soft. Drain the fat. Add some garlic powder, salt, and pepper.
02 -
In another bowl, mix the milk, soup, mustard, and ketchup until it’s smooth. Add this into the skillet with the meat. Mix it up, then spread the mixture into a 9x13-inch baking dish.
03 -
Scatter shredded cheddar cheese on top of the beef mixture, then layer the frozen fries evenly over the cheese.
04 -
Put it in an oven at 350°F (175°C) for about 30-35 minutes. The fries should look golden and crispy. For extra cheesiness, toss a little more cheese on top and stick it back in for around 5 minutes to let it melt.
05 -
Take it out of the oven and give it a few minutes to cool. Add toppings like lettuce, tomatoes, or pickles if you'd like, and enjoy!