I had the idea of making muffins filled with caramel sauce (toffee apple) so started planning that recipe but wondered what I could do to make them a bit more special...boozy icing?!
When it comes to the icing, feel free to make the icing to taste; I took these to our friends' house as a dessert and the reaction was "ooh these are lovely...how much rum did you put in the icing?!" - so perhaps if you don't like such a knock-your-socks-off booze hit go easy on the rum!
This recipe looks very long and has a few steps to it but it's really not difficult so please don't be put off by the length of it!
So, here it is - a little taste of autumn:
Toffee apple muffins with a rum buttercream icing
Prep time: 20 mins
Cooking time: 1 hour 30mins (that includes making the caramel, icing, and baking the muffins)
What you'll need:-
12 x muffin cases (I like the tulip cases)
12 hole deep bun tray
Piping bags x 2 (one should have a star nozzle for piping the icing)
Wire cooling rack
For the muffin mix:
- 225g plain flour
- 3 teaspoons baking powder
- Half a teaspoon of salt
- 100g caster sugar
- 60g unsalted butter
- 225mil semi-skimmed milk
- 110g apple (peeled, cored and chopped) - I used Discovery apples but any cooking apple will be fine
- 2 teaspoons cinammon (optional)
For the caramel sauce:
- 170g salted butter
- 340g dark muscavado sugar
- 170g golden syrup
- 1 can condensed milk
- 2 tablespoons whipping cream
- 2 teaspoons vanilla
- 2 teaspoons salt
For the rum buttercream icing:
- 340g unsalted butter
- Half a teaspoon cinammon
- 3 tablespoons dark rum
- 1.5kg icing sugar
- A few pieces of dark chocolate, roughly chopped, to decorate (optional)
How to make it:-
Pre-heat the oven to 180C (fan) or 200C (conventional oven). Begin by creaming the caster sugar and butter for the muffins in a bowl. Next, sieve together the plain flour, baking powder, and salt. Alternate adding the flour mix and milk a couple of tablespoons at a time to the butter and sugar mix. until combined. Stir in the cinammon and then fold in the apples.
Line your bun tray with the muffin cases (if you don't have any muffin cases at home you can always lightly grease the bun tray so the cakes don't stick but using cases is so much less faff!). Fill the cases with the muffin mix - roughly one and a half dessert spoonfuls of mix per case should do the trick - and pop the tray in the oven for 20-25 mins (I put mine in for 23 mins but please test the cakes before taking them out by inserting a cocktail stick into the middle of one of the muffins; if the stick comes out clean, the muffins are done)
Leave these to cool in the tin for a few mins before transferring them to a wire cooling rack.
Whilst your muffins are cooling you can now give your full attention to the caramel filling. Start by adding the butter, sugar, golden syrup and condensed milk to a large saucepan and bring gently to the boil over a moderate heat. Keep stirring the mixture to combine it fully. When the mixture has boiled stir in the whipping cream and then place the sugar thermometer in the saucepan. Leave the mixture to bubble away gently until it reaches a temperature of around 110C - stir the mix every now and then but don't mess with it too much! It will take a while to reach temperature but don't panic or turn the heat up; just be patient with it! In about 20 mins you'll have the temperature you need and then turn the heat off, stir in the vanilla and salt, and leave the mixture to cool for about 30 minutes.
Whilst the caramel is bubbling away you can make the buttercream icing. Mix the butter with one tablespoon of the rum to break the butter up a bit. Then add the icing sugar a bit at a time so you don't end up with a thick fog of icing sugar everywhere (I have never ever found a trick that stops icing sugar from going everywhere so it's just about damage limitation in my kitchen!). Add the rest of the rum and the cinammon, and combine.
When the caramel has cooled enough, it's ready to be piped into the muffins. First of all you'll have to make a hole in the muffins - you can use a piping nozzle for this or a straw even (it basically just needs to be something to create a hole big enough to pipe in to). Next, spoon the caramel into the piping bag and snip the tip of the bag off. Pipe the caramel gently into the muffins. It's really fulfilling to see the muffins expand with the lovely caramel and the tops will crack slightly when they are full - this is your signal to stop piping.
Spoon the rum buttercream into a separate piping bag with a star nozzle attached to the end. Pipe the icing over the muffin and if you want, you can add a flourish of grated or roughly chopped dark chocolate.
Relax, pop the kettle on, and enjoy a well earned rest...and a muffin of course!
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