A video from 'Instagram famous' baker Eloise Head showing viewers a simple way to make a red velvet mug cake has gone viral, with many calling it her best recipe yet.

The 26-year-old, who is the founder of FitWaffle Kitchen, an Instagram page dedicated to decadent desserts that take just a few minutes to prepare, has amassed almost 26,500 likes on her latest clip since it was shared on Thursday.

In it, the amateur chef from London whips up an indulgent sponge with basic supermarket ingredients like butter, flour, sugar, vegetable oil and food colouring to give the mixture its signature ruby hue - all inside a coffee cup.

Ms Head said it's 'by far the quickest red velvet recipe' she has ever shared and it's so easy, it's virtually impossible to mess up - even for beginners.

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To make the sponge, whisk three tablespoons of milk with a half teaspoon of lemon juice in a mug.

Then add four tablespoons of flour, two tablespoons of sugar, a quarter teaspoon of baking powder, three quarters of a teaspoon of cocoa powder, one and a half tablespoons of vegetable oil and a dash of food colouring, mixing until smooth.

Add a handful of white chocolate chips - though these are optional - on top, fold in, then microwave for about 70 seconds before turning your attention to the cream cheese icing.

This can be made by mixing 40 grams of cream cheese with 15 grams of icing sugar - it's that simple.

Spoon a generous dollop of icing over the top along with a sprinkle of icing sugar for decoration, before tucking in - that's roughly five minutes preparation time from start to finish.

The tutorial drew hundreds of delighted responses, with many tagging their friends begging them to make the mug cake at home.

'Need to try this,' one woman replied.

'Adding these to my list,' said a second.

It's the latest of Ms Head's simple recipes to become a viral sensation, following wildly popular videos on Nutella brownies with a marbled chocolate top and red velvet brownies.