About Flat Out Burgers - Southall
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?
Popular with other people
Triple Cheeseburger
£11.90Single Cheeseburger
£6.90House Waffle Fries
£3.90Hot Waffle Fries
£3.90Double Cheeseburger
£8.90Hot Tater Tots
£3.90Quadruple Cheeseburger
£14.90House Tater Tots
£3.90Cheeseburger Waffle Fries
£9.00The Flat Out Combo
£14.50
Meal Deals 🤑
Fun, love & burgers. Oh, and your choice of sides and drinks too.
The Flat Out Feast
For those who like to live life large. Double up on our classic double cheeseburger alongside your choice of TWO delicious sides and TWO thirst quenching drinks£28.90The Flat Out Combo
Making life easy for you. Our classic double cheeseburger with your choice of a delicious side and drink.£14.50
Burgers
Burgers that are smashed for flavour and texture. How high will you go?
Triple Cheeseburger
The three-peat - only for the true burger greats. Three mighty fine crispy smashed patty with FOUR slices of melted American cheese, diced onions, gherkins and your choice of our delicious house sauce or that classic combination of ketchup and mustard.£11.90Single Cheeseburger
The underdog of burgers - never to be underestimated. One mighty fine crispy smashed patty with two slices of melted American cheese, diced onions, gherkins and your choice of our delicious house sauce or that classic combination of ketchup and mustard.£6.90Double Cheeseburger
The champ - a truly undefeated burger. Two mighty fine crispy smashed patties with THREE slices of melted American cheese, diced onions, gherkins and your choice of our delicious house sauce or that classic combination of ketchup and mustard£8.90Quadruple Cheeseburger
The Quad - for those who want it all in their burger. Four mighty fine crispy smashed patties with FIVE slices of melted American cheese, diced onions, gherkins and your choice of our delicious house sauce or that classic combination of ketchup and mustard.£14.90
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.£3.90Cheeseburger Waffle Fries
Our iconic waffle fries topped with smashed crispy pieces of beef, melted cheese sauce, pickles, crispy onions and onions. Peak indulgence.£9.00Hot Waffle Fries
Dusted in our house seasoning to give you that kick you're craving when you're going flat out.£3.90Hot Tater Tots
Tater tots tossed in our house seasoning.Top tip: best enjoyed dunked in our ranch or house sauce.£3.90House Tater Tots
Pure nostalgia. Like hash browns, but so much better.£3.90Gooey Mac & Cheese Bites
Currently sold out£4.50Hot 'n' Gooey Mac & Cheese Bites
Currently sold out£4.50
Sauces & Dips
Dunk away.
Cajun Ranch Sauce
House-made, smoky, creamy and blackened with cajun seasoning. A Flat Out team favourite.£0.90House Sauce
Our secret house sauce. It's creamy. It's tangy. It's addictive.£0.90Ketchup
Heinz. Say no more.£0.90
Drinks
The classics only.
Coke
The OG.£1.90Coke Zero
The OG minus the sugar.£1.90Fanta Orange
Fizzy orange for that juicy fix.£1.90Sprite
Fun fact: our lowest selling drink. Show it some love.£1.90Rubicon Mango
Currently sold out£1.90