Preheat your oven to 190°C (375°F).
Chop off the top section of your apple and then set it aside for baking.
Carve a hole in the centre of your apple using an apple corer or carefully with a knife. Make sure you leave about 1.5 cm at the bottom of your apples so that the filling doesn’t spill out from underneath when they’re in the oven.
In a bowl, combine the dry ingredients. Then mix in your butter - it should be room temperature or softer and it’s best to break it up and dot it around the mixture rather than adding a great dollop in.
Fill your apples generously with the mixture.
You can cook your apples in individual ramekins, but we prefer to bake them all together in a large cooking dish and then serve them in something a little more aesthetically pleasing. Add your water to the bottom of the dish and pop the apples in it, topping with the lid you cut off earlier.
Bake the apples for between 30 & 45 mins. They should be cooked through and tender but not mushy. Once they’re cooked, you can baste them with a bit of the cooking liquid.