Flat Out - Smash Burgers - Bermondsey delivery from South Bermondsey Area

About Flat Out - Smash Burgers - Bermondsey
Expertly smashed, just for you. Your Flat Out journey begins at the iconic crispy edge of our patties, taking you on a tantalising trip to a juicy centre. We keep the toppings simple, delicious and customisable for you. We use quality certified British & Irish beef that's sourced carefully to halal standards - because we believe everyone should be able to enjoy our proper smashed burgers. Choose between one, two, three, four and even TEN patties - how high will you go?
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Meal Deals 🤑

Fun, love & burgers. Oh, and your choice of sides and drinks too.

The Flat Out Combo
Highly rated
· Currently sold out
£14.50
The Flat Out Feast
Currently sold out
£28.90
Singles Feast
Currently sold out
£17.00

New Burger ✨

Try our brand new burger!

Truffle Burger
Currently sold out
£9.99

Special Burgers 🍂

Try our two special smash burgers: expertly crafted, bold, and delicious—here for a limited time only!

BBQ Onion Burger
Currently sold out
£10.50
Popular
Spicy Jalapeño Burger
Currently sold out
£10.50

Classic Burgers 🍔

Burgers that are smashed for flavour and texture. How high will you go?

Double Cheeseburger
Highly rated
· Currently sold out
£8.90
Single Cheeseburger
Currently sold out
£6.90
Triple Cheeseburger
Highly rated
· Currently sold out
£11.90
Quadruple Cheeseburger
Currently sold out
£14.90

Vegan Burgers 🌱

Savor the flavor-packed delight of our Vegan Smash Burger, a plant-based patty cooked to perfection and bursting with taste in every bite.

Vegan Double Cheeseburger 🌱
Indulge in our Vegan Double Smash Burger, a plant-based delight that doesn't compromise on flavor. Featuring two perfectly seasoned, crispy-edged vegan patties, topped with refreshing pickles, crunchy onions and a tangy vegan special sauce. All this goodness is sandwiched between a toasted, soft vegan bun.
£9.90
Vegan Triple Cheeseburger 🌱
Currently sold out
£12.90
Popular

THE FLAT OUT CHALLENGE 💪

A burger to end all burgers. Post a before & after shot on your Instagram story, tag @flatoutburgersuk, and you'll receive £10 off your next order. That's a pound for every patty! Do you have what it takes?

Ten Patty Cheeseburger Challenge
Currently sold out
£29.90

Sides 🍟

Beige but beautiful.

House Waffle Fries
Death to soggy chips. Long live crispy waffle fries - lightly seasoned with salt because that's all you need.
£3.90
House Tater Tots
Pure nostalgia. Like hash browns, but so much better.
£3.90
Hot Waffle Fries
Dusted in our house seasoning to give you that kick you're craving when you're going flat out.
£3.90
Gooey Mac & Cheese Bites
Bites of macaroni pasta - crumbed & coated in our original seasoning and oozing with mature cheddar cheese inside. Naughty.
£4.50
Hot Tater Tots
Tater tots tossed in our house seasoning.Top tip: best enjoyed dunked in our ranch or house sauce.
£3.90
Hot 'n' Gooey Mac & Cheese Bites
Bites of macaroni pasta - crumbed & coated in our HOT seasoning and oozing with mature cheddar cheese inside. Do yourself a favour and dunk these in some of our ranch or house sauce.
£4.50
Cheeseburger Waffle Fries
Our iconic waffle fries topped with smashed crispy pieces of beef, melted cheese sauce, pickles and crispy onions. Peak indulgence.
£9.00
Popular

Sauces & Dips 🍅

Dunk away.

House Sauce
Our secret house sauce. It's creamy. It's tangy. It's addictive.
£0.90
Cajun Ranch Sauce
House-made, smoky, creamy and blackened with cajun seasoning. A Flat Out team favourite.
£0.90
Ketchup
Heinz. Say no more.
£0.90
Mustard
£0.90

Drinks 🥤

The classics only.

Coke
The OG.
£2.25
Coke Zero
The OG minus the sugar.
£2.25
Rubicon Mango
Rich in vitamin C, apparently.
£2.25
Fanta Orange
Fizzy orange for that juicy fix.
£2.25
Sprite
Fun fact: our lowest selling drink. Show it some love.
£2.25

Dessert 🍦

Finish on something sweet.

Churros
Caramel-filled churros with a rich chocolate dipping sauce. A perfect, sweet finishing touch!
£4.90