Preheat the oven to 180'C / 160'C Fan / Gas 4. Line a 12-hole muffin tin with 12 paper muffin cases and set aside.
Peel the bananas and add to a small bowl. Using a fork, mash them until they are completely mushy - you can leave a couple of small lumps if you like.
In another bowl, mix the plain gluten free flour, xanthan gum and baking powder together. Set to one side.
In a large mixing bowl, add the butter and sugar and beat together until creamed.
Next add the mashed bananas, eggs, vanilla extract and flour mix. Beat again with an electric mixer until fully combined.
Spoon the Nutella into the mixture and, using a wooden spoon or spatula, stir until it swirls through the cake batter. Be careful not to over-mix or you will lose the swirl effect!
Spoon the mixture evenly between the cake cases (they should be fairly full). Or follow the steps below to create a gooey Nutella centre.
To add a Nutella Centre
Add 1-2 teaspoons of cake batter to each muffin case, so the bottom is completely covered. Add a teaspoon of Nutella in the centre of each, then fill the cases with the rest of the batter, covering the Nutella up.
Bake the muffins in the pre-heated oven for 25-30 minutes until well risen and golden on top. Remove from the oven and place on a cooling rack to cool before eating.
Video
Notes
Weighing Scales vs Cups: You can toggle this recipe card to convert the ingredients into cups. However, I always recommend using weighing scales – these are cheap to buy and much more accurate. And in gluten free baking, a tiny variation can make a huge difference!
Flour Swaps: To make with gluten free self raising flour, use 250g self-raising flour, 1 tsp baking powder, and omit the xanthan gum. To make with rice flour simply use 250g gluten free rice flour instead of gluten free plain flour.
Step-by-Step Photos: Check out the blog post above for step-by-step photos to show how these gluten free muffins should look at each stage.
Storing and Freezing: These muffins will keep for 3-5 days in an airtight container. You can also freeze them.
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