Cook a one-pound package of ground beef with the onion. Use 1/4 of it for this recipe. Cool the remaining beef completely, then divide into three parts, wrap tightly and freeze for future use.
Even the leanest beef still has some fat. Press browned ground beef between two layers of paper towels to eliminate more fat.
Savory Impossibly Easy Pies can be covered and refrigerated up to 24 hours before baking. You may need to bake a bit longer than the recipe directs since you’ll be starting with a cold pie. Watch carefully for doneness.