Everyone loves creamy, savory sausage gravy spooned over a doughy biscuit, and we think that they might like it even more when it’s doused all over crispy, hot fries, too.
Heat the oil in a large skillet over medium-high. Add the ground sausage and cook, breaking it up with a spoon as you go, until cooked through, about 10 minutes. Remove the sausage from the pan, leaving the drippings.
Add the butter and melt, using a whisk to spread it around and scrape up the browned bits in the pan. When the butter is fully melted, sift the flour all over the butter, and then use the whisk to fully incorporate. Cook the roux for about 2 minutes, until it is bubbling throughout and the raw smell of flour is gone. Slowly add the milk, whisking constantly, and bring the mixture to a boil.
Season with salt and pepper, to taste. Whisk the gravy until the thickened, then add the cooked sausage.
Place the fries in a fry boat or shallow bowl and top with a ½ cup or more of the sausage gravy.