Apple Coffee Cake Mission - first attempt

I like to celebrate Friday with cake for breakfast. For the past few months, it has been the same choice each week - an apple coffee cake from Second Cup. Having made an apple zucchini cake, have been inspired try to adapt this a bit to approximate my Friday apple coffee cake. A Friday to be spent working from home and far from Second Cup motivated me to try this one Thursday evening. This here is the initial recipe and my first time making them.

INGREDIENTS (makes 12 cakes/muffins)

1 cup flour

1 cup of demerera sugar
1 tsp of baking soda
1/2 tsp of baking powder
1/4 tsp salt
2tsp of cinnamon 
4oz butter, melted
2 eggs, beaten
1tsp of vanilla
1 cup of grated apple (Peeled. This was about 1 and a half large apples- I used Macintosh apples. Grating apple was way easier than grating zucchini for the other recipe)
12 slices of peeled apple to top the cakes off, as in the picture.

METHOD

1. Preheat oven to 375F
2. Put your paper cupcake cases in the muffin tin
3. Mix dry ingredients together 
4. Add vanilla essence, egg and melted butter to the dry ingredients and mix 
5. Add in the grated apple and mix
6. Distribute evenly among the muffin tin holes 
7. Bake for about 20 minutes- I think my oven bakes slowly somehow so maybe 15 in a more efficient oven!
8. Leave to cool in tin for 10 minutes and then remove and allow to cool on a wire rack.