Biscoff Mug Cake Recipe

This 5-minute Biscoff mug cake is my go-to for a quick, easy, single-serve dessert.

It only takes a couple of minutes to prep and cooks in the microwave in just 1 minute. The result: A soft, moist, and delicious cake that’s perfect for an afternoon treat or a quick dessert after dinner.

And if you’re like me and sometimes find yourself a little bit obsessed with Biscoff, this will absolutely hit the spot.

Ingredients & Substitutions

Lotus Biscoff Spread

Lotus Biscoff biscuit spread is the key flavour in this recipe. Biscoff spread is a creamy, spiced biscuit spread (cookie butter) made from crushed caramelised Biscoff biscuits. It has a rich, sweet, slightly cinnamon flavour. You can use either smooth or crunchy Biscoff spread as both work perfectly.

Milk

Use any milk you like – dairy or non-dairy. I’ve tried it with full-cream, oat, and almond milk, and it turns out great every time.

Oil

Oil keeps the cake soft and moist. Use a neutral oil like canola, vegetable, or sunflower oil. I’ve also tried olive oil; it adds a bit more flavour but still works well.

Sugar

Just a touch of sugar enhances the sweetness and brings out the Biscoff flavour.

Vanilla Essence

Vanilla essence adds depth and a subtle sweetness without overpowering the cake.

Salt

A small pinch of salt sharpens all the other flavours. If a dessert ever tastes like it’s missing something, it probably just needs a touch of salt.

Flour

Plain all-purpose flour forms the base of the cake and gives it structure. You can use gluten-free flour if needed.

Baking Powder

Baking powder helps the mug cake rise and become fluffy.

Step-by-Step Instructions

Step 1: Mix the Wet Ingredients

In a 250ml (8oz) microwave-safe mug, combine the Biscoff spread, milk, oil, sugar, vanilla essence, and salt. Microwave for 10-20 seconds to soften the Biscoff, then stir until smooth.

Step 2: Add the Dry Ingredients

Add the flour and baking powder. Stir well until fully combined and smooth, making sure to scrape down the sides of the mug.

Step 3: Cook in the Microwave

Microwave on high for 60 seconds. The cake should rise and look cooked through but still soft in the centre. Remember that cooking times will vary depending on the strength of your microwave.

Serving Suggestions

Serve this Biscoff mug cake hot with a scoop of vanilla ice-cream and a drizzle of melted Biscoff spread. You can also top it with Biscoff biscuits if you’re feeling fancy but honestly, it’s delicious on its own.

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