Step 1

Preheat oven to 375°F. Grease a sheet pan with nonstick cooking spray.

Step 2

In large bowl, combine the ground beef, onions, egg, oats, ketchup, dry mustard, brown sugar, sage and salt and pepper. Use a fork and then your hands to gently bring it together. Don't overmix or the meatloaf will become tough.

Step 3

Form the mixture into a log about 4-5 inches thick on the sheet pan.

Step 4

Whisk the ketchup, brown sugar, and dry mustard together to make the topping. Spread on top of the meatloaf.

Step 5

Bake for 10 minutes.

Step 6

Meanwhile, toss the potatoes with the olive oil and plenty of salt and pepper.

Step 7

Spread the potatoes out onto the sheet pan around the meatloaf.

Step 8

Bake for another 25-30 minutes until potatoes are tender and an instant-read thermometer inserted into the center of the meatloaf registers 165°F.

Step 9

Cut meatloaf into slices and serve with potatoes.