Toby Carvery's chocolate and Oreo wreckage, and Wetherspoon's tycoons sundae finished the main three most belt-busting puds, with 1,133 and 1,067 calories individually.
Every one of the three contain the greater part of a lady's day by day prescribed calorie admission.
All pastries were positioned by calorie tally, sugar content, and immersed fat levels.
The Harvester chocolate fudge cake finished the sugar table with 128g for each serving - four circumstances the day by day prescribed measure of included sugar.
Then the Toby Carvery Oreo dessert finished the soaked fat table with 53g, double the prescribed every day consumption for a grown-up.
Specialists from wellbeing site Treated.com crunched the nutritious data from 24 high road diners to think of their association tables.
A representative said: "There's little damage in requesting a liberal sweet once in a while. However, 'infrequently' are the essential words in that sentence.
"Requesting and eating a sweet which surpasses (or so far as that is concerned even approaches) 1,000 calories or 100 grams of sugar all the time will represent a wellbeing danger, and increment somebody's weakness to heftiness, sort 2 diabetes and coronary illness.
"In full administration eateries, dessert parcel sizes have a tendency to be bigger than those in fast food eateries. Moreover, full administration eateries practice more in the eating background, and all things considered sweets may be presented with additional items, for example, dessert and sauces, to make them more satisfactory."
There are some generally sound choices on the high road, be that as it may, with Gourmet Burger Kitchen serving up tubs of Yeo Valley Ice Cream pots with 117 calories.
Yo Sushi additionally does a matcha move with less than 250 calories.
Representatives for Wetherspoon, Toby Carvery, and Harvester all said that - notwithstanding the sweets highlighted - there are a scope of more advantageous choices on their menus.
Wetherspoon likewise said: "Clearly the general population at Treated.com don't appear to understand that individuals pick a sweet since it's a treat toward the end of the dinner."