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The Unhealthiest Fast Food Desserts on the Planet

After a salty meal, you might in the mood for something sweet. But these treats are downright scary.
strawberry ice cream cone

When you're craving a burger, chicken nuggets, and some fries, a trip to your favorite fast-food restaurant is in order. And if you happen to want a sweet treat to cap off the meal after indulging in all that salt that comes from your main course, it's understandable. But there are some truly unhealthy fast food dessert options that just shouldn't be eaten after a big meal, and frankly, you should just avoid them entirely.

Here, we break down the unhealthiest fast-food dessert menu items, ranked from the bad to the absolute worst, so you know exactly which sweet treats you're much better off without.


White Castle Fudge-Dipped Brownie on a Stick

white castle fudge dipped brownie on a stick
Courtesy of White Castle
Per 1 brownie: 250 calories, 12 g fat (7 g saturated fat, 0 g trans fat), 95 mg sodium, 35 g carbs (1 g fiber, 26 g sugar), 2 g protein

Although this White Castle brownie that, yes, is actually served on a stick is the least offensive of all the culprits, that doesn't mean you should be eating it regularly. Especially if you consume a full meal from White Castle right before!


Wendy's Frosty Cookie Sundae

wendy's menu frosty cookie sundae

Per 1 sundae: 400 calories, 14 g fat (8 g saturated fat, 0 g trans fat), 200 mg sodium, 61 g carbs (1 g fiber, 45 g sugar), 8 g protein

Wendy's chocolate Frosty is a classic, sure, and here, the dessert option got a bit of a makeover. This version is topped with chocolate chunk cookie bites and Ghirardelli chocolate sauce, which means more sugar. With 45 grams, it's double the amount of the sweet stuff you would get from a junior-sized chocolate Frosty.


Carl's Jr. Hand-Scooped Oreo Cookie Shake

Carl's jr. milkshakes
Carl's Jr./Facebook
Per 1 shake: 710 calories, 39 g fat (25 g saturated fat, 1.5 g trans fat), 340 mg sodium, 79 g carbs (1 g fiber, 53 g sugar), 13 g protein

Milkshakes are always a dangerous option, and when you add Oreo cookies to the mix, that means more demerits for this dessert choice from Carl's Jr. (And for more help figuring out foods are the best and worst options out there, here is your ultimate restaurant and supermarket survival guide!)


Checkers Banana Milkshake

banana milkshake
Per 22 oz size: 460 calories, 13 g fat (9 g saturated fat, 0 g trans fat), 260 mg sodium, 77 g carbs (2 g fiber, 63 g sugar), 9 g protein

Think going with a fruit-based option is better? While Checkers' banana milkshake is lower in calories than other desserts on this list, it packs 63 grams of sugar. That's more sugar than you'll get in six Original Glazed Krispy Kreme donuts. Yikes!


Whataburger Cinnamon Roll

whataburger cinnamon roll
Whataburger/ Twitter
Per 1 roll: 580 calories, 17 g fat (11 g saturated fat, 0 g trans fat), 1,290 mg sodium, 94 g carbs (7 g fiber, 38 g sugar), 10 g protein

Oftentimes, you associate dessert with something sweet. So imagine your surprise when you uncover just how much sodium is in one of Whataburger's cinnamon rolls. More than 1,200 milligrams is just outrageous!

This cinnamon roll is a no-go, just like any of these 50 Unhealthiest Desserts on the Planet.


Chick-fil-A Strawberry Milkshake

three types of milkshakes with red straws
Kiersten Hickman/Eat This, Not That!
Per 1 milkshake: 550 calories, 17 g fat (10 g saturated fat, 0 g trans fat), 450 mg sodium, 92 g carbs (4 g fiber, 76 g sugar), 11 g protein

Chick-fil-A's strawberry milkshake has the same amount of calories as the Spicy Deluxe Sandwich. Let that sink in. And along with this shake being high in calories, it's sky-high in sugar, packing 76 grams.


McDonald's M&M McFlurry

Per regular size: 640 calories, 22 g fat (14 g saturated fat, 0 g trans fat), 200 mg sodium, 96 g carbs (2 g fiber, 86 g sugar), 13 g protein

Just about everyone who pays a visit to McDonald's knows how legendary the McFlurry ice cream treat is, but the regular-size has 86 grams of sugar. Oh yeah, and it has more calories than a Big Mac. No thanks!


Five Guys Bacon Milkshake with Whipped Cream

five guys chocolate milkshake with whipped cream and red straw
Courtesy of Five Guys
Per regular size: 770 calories, 40.5 g fat (25 g saturated fat, 1 g trans fat), 640 mg sodium, 85 g carbs (0 g fiber, 83 g sugar), 17 g protein

Adding bacon to anything is going to tack on more calories, fat, and sodium, but at Five Guys, the bacon milkshake is also high in sugar, too. All around, there is just nothing redeeming about this dessert.


Burger King Chocolate Oreo Shake

oreo shake
Courtesy of Burger King
Per milkshake: 740 calories, 22 g fat (13 g saturated fat, 0.5 g trans fat), 680 mg sodium, 121 g carbs (1 g fiber, 101 g sugar), 17 g protein

At Burger King, the chocolate Oreo shake is the one to stay far away from, as it has more calories than BK's Original Chicken Sandwich and serves up more than 100 grams of sugar. That is just scary!


Sonic Oreo Peanut Butter Shake

sonic oreo peanut butter shake
Courtesy of Sonic
Per large size: 1,720 calories, 104 g fat (48 g saturated fat, 2 g trans fat), 1,040 mg sodium, 172 g carbs (4 g fiber, 111 g sugar), 30 g protein

Sonic is known for its beloved frozen desserts, but this Oreo Peanut Butter Shake milkshake is one you don't want to look twice at. The fact that it will cost you more than 1,700 calories and 1,000 milligrams of sodium and has 111 grams of sugar, there is just nothing to brag about here.


Culver's Banana Split

Culver's banana split
Courtesy of Culver's
Per 3-scoop sundae: 1,380 calories, 74 g fat (35.3 g saturated fat, 1.5 g trans fat), 510 mg sodium, 166 g carbs (7 g fiber, 125 g sugar), 18 g protein

A banana split might seem like a healthier dessert option since it contains fruit. But don't fall for that! At Culver's, this ice cream sundae has more than 1,300 calories, 74 grams of fat, and 125 grams of sugar. It's excessive in every way! If you happen to order this, be sure you're sharing with quite a few friends.


Arby's Jamocha Shake

arbys shake
Courtesy of Arby's
Per large size: 1,030 calories, 31 g fat (20 g saturated fat, 0.5 g trans fat), 650 mg sodium, 116 g carbs (1 g fiber, 150 g sugar), 24 g protein

At Arby's, the flavors of chocolate and coffee come together for the famous Jamocha Shake. Sure, it's a delicious combination, but take a few sips and leave it alone. Why you ask, as it's easy to drink it all? Well, coming in at more than 1,000 calories and 150 grams of sugar, you'll want to keep away from this guy.


A&W Polar Swirl, M&M

aw polar swirl
Courtesy of A&W
Per 20 oz: 1,190 calories, 43 g fat (26 g saturated fat, 0 g trans fat), 640 mg sodium, 182 g carbs (3 g fiber, 162 g sugar), 24 g protein

At A&W, the Polar Swirl is a staple, but the M&M flavor that comes in a ridiculously large 2o ounce size is the one to avoid. Sorry, but 162 grams of sugar is just not OK! Again, if you happen to order this, it better be to share with a lot of loved ones.


Dairy Queen Oreo Cookie Blizzard

Dairy queen oreo cookie blizzard

Per large size: 1,640 calories, 78 g fat (32 g saturated fat, 2 g trans fat), 990 mg sodium, 214 g carbs (6 g fiber, 155 g sugar), 27 g protein

We've met the worst of the worst. If there's one fast-food dessert to forever steer clear of, it's Dairy Queen's Oreo Cookie Blizzard. The large size of this frozen treat has more calories than the new six-piece chicken and biscuits basket, which consists of chicken strips, mini biscuits, and fries, and clocks in at 1,420 calories. Imagine eating that entrée and then this Blizzard right after for dessert. You now know better, that's for sure!

Jennifer Maldonado
Jennifer Maldonado is a senior editor at Eat This, Not That!, specializing in food and health content. Read more