Preheat oven to 350°F (175°C).
Season pork chops with salt and pepper.
Heat oil in a skillet over medium-high. Brown pork chops on both sides and set aside.
In the same skillet, cook onions and garlic until translucent.
Add flour to make a roux, stirring for a minute.
Gradually add milk and chicken broth, stirring until thickened. Remove from heat.
Layer half the potatoes in a casserole dish. Top with half the sauce and cheese.
