Backslash Burger (Formerly Fifty Fifty)

Frederick, MD

526 N Market St, Frederick, MD 21701, USA
54 itemsUpdated March 12, 2026
Structured menu data

Choose Your Patties – Double

$12.26

Half Beef Half Bacon Smashburger Plant Based Smashburger Fried Chicken

Choose Your Patties – Fried Chicken

$12.26

Half Beef Half Bacon Smashburger Plant Based Smashburger Fried Chicken

Choose Your Patties – Single

$9.44

Half Beef Half Bacon Smashburger Plant Based Smashburger Fried Chicken

Choose Your Patties – Triple

$16.04

Half Beef Half Bacon Smashburger Plant Based Smashburger Fried Chicken

Say Cheese – Extra cheese

$0.94

Choose cheese (included), no cheese (included), or extra cheese (upgrade)

Upgrades – Backslash'd

$0.94

Finish your BYO off with the following:

Upgrades – Bacon jam

$1.89

Finish your BYO off with the following:

Upgrades – Beer battered onion rings (topping)

$1.89

Finish your BYO off with the following:

Upgrades – Grilled mushrooms

$0.94

Finish your BYO off with the following:

Upgrades – Herbed goat cheese

$0.94

Finish your BYO off with the following:

Upgrades – Pepper crusted bacon

$1.89

Finish your BYO off with the following:

Upgrades – Roasted poblano cream cheese

$0.94

Finish your BYO off with the following:

Upgrades – Spicy Patties

Finish your BYO off with the following:

Belgian Black Label – Double

$15.09

Spicy patties and bourbon barrel aged maple syrup on fluffy Belgian waffles

Belgian Black Label – Fried Chicken

$15.09

Spicy patties and bourbon barrel aged maple syrup on fluffy Belgian waffles

Belgian Black Label – Single

$11.33

Spicy patties and bourbon barrel aged maple syrup on fluffy Belgian waffles

Belgian Black Label – Triple

$18.87

Spicy patties and bourbon barrel aged maple syrup on fluffy Belgian waffles

I Can't Feel My Face – Double

$13.21

Ghost pepper sauce, candied jalapeno, EXTREMELY HOT. EAT AT YOUR OWN RISK!

I Can't Feel My Face – Fried Chicken

$13.21

Ghost pepper sauce, candied jalapeno, EXTREMELY HOT. EAT AT YOUR OWN RISK!

I Can't Feel My Face – Single

$10.38

Ghost pepper sauce, candied jalapeno, EXTREMELY HOT. EAT AT YOUR OWN RISK!

I Can't Feel My Face – Triple

$16.98

Ghost pepper sauce, candied jalapeno, EXTREMELY HOT. EAT AT YOUR OWN RISK!

Old Fashioned – Double

$12.26

Bourbon molasses, caramelized onions, pickles

Old Fashioned – Fried Chicken

$12.26

Bourbon molasses, caramelized onions, pickles

Old Fashioned – Single

$9.44

Bourbon molasses, caramelized onions, pickles

Old Fashioned – Triple

$15.09

Bourbon molasses, caramelized onions, pickles

PBPB&BB – Double

$12.26

Crunchy peanut butter, spicy patties, pickles

PBPB&BB – Fried Chicken

$12.26

Crunchy peanut butter, spicy patties, pickles

PBPB&BB – Single

$9.44

Crunchy peanut butter, spicy patties, pickles

PBPB&BB – Triple

$15.09

Crunchy peanut butter, spicy patties, pickles

Peter Piper – Double

$13.21

Roasted poblano cream cheese, hot pickled cherry peppers, bourbon molasses

Peter Piper – Fried Chicken

$13.21

Roasted poblano cream cheese, hot pickled cherry peppers, bourbon molasses

Peter Piper – Single

$10.38

Roasted poblano cream cheese, hot pickled cherry peppers, bourbon molasses

Peter Piper – Triple

$16.98

Roasted poblano cream cheese, hot pickled cherry peppers, bourbon molasses

She's My Cherry – Double

$13.21

Herbed goat cheese, sour cherry jam

She's My Cherry – Fried Chicken

$13.21

Herbed goat cheese, sour cherry jam

She's My Cherry – Single

$10.38

Herbed goat cheese, sour cherry jam

She's My Cherry – Triple

$16.98

Herbed goat cheese, sour cherry jam

The Backslash Burger – Double

$13.21

Backslash'd (onion smacked into the patties, seared with mustard), with Backslash sauce and pickles

The Backslash Burger – Fried Chicken

$13.21

Backslash'd (onion smacked into the patties, seared with mustard), with Backslash sauce and pickles

The Backslash Burger – Single

$10.38

Backslash'd (onion smacked into the patties, seared with mustard), with Backslash sauce and pickles

The Backslash Burger – Triple

$16.98

Backslash'd (onion smacked into the patties, seared with mustard), with Backslash sauce and pickles

The Ogre – Double

$13.21

Tiger sauce, caramelized onion, raw onion, beer battered onion rings

The Ogre – Fried Chicken

$13.21

Tiger sauce, caramelized onion, raw onion, beer battered onion rings

The Ogre – Single

$10.38

Tiger sauce, caramelized onion, raw onion, beer battered onion rings

The Ogre – Triple

$16.98

Tiger sauce, caramelized onion, raw onion, beer battered onion rings

Fountain Soda

Coke, Diet Coke, Coke Zero, Sprite, Dr. Pepper, Barq's Rootbeer

Water Bottle

$2.00

Dino Nuggets

Dino nuggets (6) with choice of side and drink

Kids Backslash Burger

$9.00

Served with choice of side and drink

Beer Battered Onion Rings

$5.66

Served with Backslash sauce

French Fries

$4.72

Classic straight cut french fries, served with Backslash Sauce

Nightingale Ice Cream Sandwiches

$6.60

Flavors rotate seasonally

Old Bay Fries

$4.72

Straight cut, skin on fries with Old Bay and Backslash sauce

Sweet Potato Fries

$5.66

Coated in cinnamon sugar and served with house-made blueberry ketchup