If I want a dome, I do like Laura – I pre-heat the oven to 375 degrees and lower the temperature to 350 – that works most of the time. I wouldn’t overfill the cups because you may end up with a deformed cupcake that will need to be trimmed. If I want a flatter cupcake, I set the oven to 325 degrees and bake it a little longer.
You can always create a dome with buttercream – especially if you are covering the cupcake with fondant.
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