Mix the meatloaf-style patty blend:

In a bowl, whisk the egg, milk, ketchup, Worcestershire, and seasonings.

Stir in breadcrumbs and onions.

Add the ground beef and mix just until combined (don’t overwork it).

Form into patties:

Divide into 4 equal portions.

Form into patties slightly larger than your buns (they’ll shrink a bit when cooked).

Cook the patties:

Grill or pan-fry over medium heat, about 4–5 minutes per side, until the internal temp hits 160°F (71°C).

Optional: Add cheese in the last minute and cover to melt.

Toast the buns:

Lightly toast on the grill or pan with a bit of butter for extra flavor.

Assemble the burger:

Bottom bun → ketchup or glaze → lettuce → meatloaf burger → toppings → top bun.

🔄 Variations:
Spicy: Add hot sauce or diced jalapeños to the meat mix.

Mini sliders: Make smaller patties for party-friendly sliders.

Turkey version: Substitute with ground turkey and use sautéed onions and a touch of poultry seasoning.

Want a glaze like classic meatloaf? Mix:

2 tbsp ketchup

1 tbsp brown sugar

1 tsp mustard
Brush over the patties in the last 2 minutes of cooking.