Heat oven to 400°F. Lightly oil a 9-inch pie plate.
Brown the ground beef and onion in a skillet over medium-high heat, breaking it up as it cooks, 6–8 minutes.
Drain excess fat. Stir in garlic, salt, and pepper; cook 30 seconds until fragrant.
Mix in Worcestershire, mustard, and ketchup; simmer 1 minute. Fold in pickles if using and remove from heat.
Spread the meat mixture into the pie plate. Sprinkle about 1¼ cups cheddar over the top, reserving the rest.
Whisk milk, beaten eggs, and baking mix in a bowl until smooth. Let stand 2 minutes to hydrate.
Pour the batter evenly over the meat. Scatter remaining cheese on top.
Bake 25–30 minutes until the center is set and the top is golden. Rest 10 minutes before slicing.
Notes
Variation: Stir in crisp cooked bacon, or swap cheddar for a blend like Colby Jack. Add a drizzle of burger sauce at the table. Storage: Refrigerate leftovers up to 4 days; reheat at 325°F until warmed through or microwave in short bursts.This recipe is an original creation inspired by classic Cheeseburger Pie Recipe flavors. All ingredient ratios and instructions are independently developed.