The BA Patty Melt
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 28 Jan 2026
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This classic patty melt is the ultimate high-protein comfort food, bridging the gap between a gourmet beef burger and a decadent toasted sandwich. Featuring juicy minced beef patties, sharp aged cheddar, and nutty Swiss cheese, the dish is defined by its deep, sweet layers of slow-cooked caramelised onions. Using seeded rye bread provides a sturdy, aromatic base that stands up perfectly to the rich fillings, while a clever mayonnaise coating ensures a perfectly crisp, golden-brown crust every time.
Ideal for a satisfying weekend lunch or a quick evening meal, this homemade sandwich is as practical as it is delicious. The beef patties can be prepared up to eight hours in advance, making it an excellent choice for those who enjoy a bit of forward planning. Serve your melts hot from the frying pan with a side of crunchy pickles or a simple green salad to balance the savoury flavours.
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Ingredients for The BA Patty Melt
3 tablespoons vegetable oil
2 thinly sliced large onions
1/4 small onion, finely chopped
450g beef mince chuck (20% fat)
1 tablespoon ketchup
1/2 teaspoons garlic powder
1/4 teaspoons freshly ground black pepper
1 teaspoon kosher salt
4 slices seeded rye bread
110g thinly sliced aged sharp cheddar
110g thinly sliced Swiss cheese
4 slices bread
1 teaspoon mayonnaise
parchment or waxed paper
How to make The BA Patty Melt
Back to contentsHeat 2 tablespoons vegetable oil in a medium skillet over medium heat and cook 2 thinly sliced large onions, stirring often and adding water as needed to prevent burning, until deep golden brown and very soft, 20-25 minutes.
Gently mix 1/4 small onion, finely chopped, 450g beef mince chuck (20% fat), 1 tablespoon ketchup, 1/2 teaspoons garlic powder, 1/4 teaspoons freshly ground black pepper, and 1 teaspoon kosher salt in a medium bowl. Divide into 4 portions and press each between 2 pieces of parchment or waxed paper until about 1/4 " thick (you want them roughly the same dimensions as the bread you're using).
Heat 1 tablespoon vegetable oil in a large skillet, preferably cast iron, over medium-high. Working in 2 batches, cook patties, pressing gently, until browned but still pink in the centre, about 2 minutes per side. Transfer to a plate. Do ahead: Patties can be formed 8 hours ahead. Cover and chill.
Wipe out skillet; reduce heat to medium. Top 4 slices seeded rye bread with 110g thinly sliced aged sharp cheddar, then patties, onions, 110g thinly sliced Swiss cheese, and another 4 slices bread; spread tops with 1 teaspoon mayonnaise each. Cook, mayo side down and weighted with a foil-covered heavy pan, until golden brown, about 3 minutes. Remove pan; spread top of each melt with 1 teaspoon mayonnaise. Flip; weight with pan. Cook until bread is golden brown and cheese is melted, about 3 minutes.
Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Article history
The information on this page is peer reviewed by qualified clinicians.
28 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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