Updated 26 July 2026
Smarties Fusion

Burger King King Fusion - Smarties

Fusion Vanilla soft-serve topped with Smarties®.

May contain: Gluten, Wheat, Milk

Rate the King Fusion - Smarties

Burger King has not published a confirmed restaurant price for this item in the data this site uses, so no price is shown. Calories and nutrition below come from the brand's own figures.

About the King Fusion - Smarties

The Burger King King Fusion - Smarties has no price published by Burger King in its restaurant data and carries 199 kcal. Fusion Vanilla soft-serve topped with Smarties®. It sits in the desserts section of the UK menu, alongside 19 other items.

On the numbers it gives you 6.7g of fat, 4.7g of it saturated, 0.18g of salt, 3 percent of the 6g daily maximum, 25g of sugar.

At 132g the King Fusion - Smarties works out at roughly 151 kcal per 100g. That makes it relatively light for its size, which is why it works better beside something else than on its own.

Sugar accounts for roughly 50 percent of the calories here, which is 28 percent of the 90g daily reference. It is the single figure that decides whether this belongs in a daily total or an occasional one.

On calories it lands 76 kcal below the desserts average of 275 kcal. If the count matters more than the craving, Sausage and Egg Sandwich lands in the same place at 200 kcal.

The ingredient list carries no declared allergen at all. The cross contact list carries 3: gluten, wheat, milk. Read on its own the empty first list looks reassuring, which is exactly why the second is published beside it. Of the 18 items in this section with an allergen declaration, 4 flag fewer than this one. The declaration is the brand's, made against the fourteen allergens UK law names, and it stops at the recipe. The branch is the part you have to ask about.

Ordered as part of a meal, Small Ben & Jerry's Cookie Dough at £2.29 and Small Ben & Jerry's Caramel Chew Chew at £2.29 sit in the same section and are the obvious companions. What that combination costs and totals is worked out on the nutrition calculator, and every other price sits on the main menu page.

Burger King King Fusion - Smarties Nutrition

Energy
199 kcal
Fat
6.7g
Saturates
4.7g
Carbohydrate
31g
Sugars
25g
Fibre
0.8g
Protein
3.9g
Salt
0.18g
Weight
132g

Values are approximate and come from Burger King UK published nutrition data. Updated 26 July 2026. Report an error.

How to Make a King Fusion - Smarties at Home

The Smarties sundae is one of the easier things on this menu to copy, because the base is two ingredients and the flavour goes on at the end.

Prep10 min
Cook0 min
Total10 min
DifficultyEasy

Ingredients

4 servings

Method

0 of 5 steps

Tips

  • Cold cream, cold bowl, cold whisk. Warm anything and you will be whisking twice as long for a worse result.
  • Resist checking it every hour. Every stir puts more ice crystals in, not fewer.
  • For reference, the counter portion weighs 132g and carries 199 kcal, which is the size to aim for rather than a guess.

Variations

  • Swirl half the sauce through the base before freezing so it runs through rather than sitting on top.
  • Add crushed biscuit at the base for texture against the soft serve.
  • Use oat cream and condensed oat milk for a dairy free version.

On its own, straight after a burger. It is sweet enough that anything alongside it competes.

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Comparing the King Fusion - Smarties Against the Rest of the Menu?

Every Burger King UK item with its price and calorie count, sortable in one view.

view Burger King menu prices

King Fusion - Smarties Questions

Burger King has not published a confirmed restaurant price for the King Fusion - Smarties in the price data this site draws on, so no figure is shown rather than a guess. Calories and full nutrition for it are listed above, and the desserts menu shows prices for everything else in the section.

The King Fusion - Smarties contains 199 kcal, which is 10 percent of a 2,000 kcal day. Compare it against the rest of the desserts range, where the average lands at 275 kcal.

It carries 0.18g of salt. UK guidance sets the adult limit at 6g a day, so this is 3 percent of the daily maximum from one item. Sides and dips add to that faster than most people expect.

The standard order around it is fries and something cold. From the same section, Mango and Passionfruit Cheesecake Bar and Gooey Salted Caramel Cheesecake Bar are worth a look. The sides menu lists every side with its price and calorie count.

Menus vary between branches, and limited run items in particular are not carried everywhere. The Burger King app shows the live menu once you select a restaurant, which is the only reliable way to check before travelling. The store locator lists every UK branch.

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