In general I'm skeptical about Finnish food that look like omenahyvä (not to mention mämmi). It is aesthetically not so appealing, to say the least..
But... Unlike mämmi (sorry mämmi :) ) this is just soo good and easy, and healthy, and has so many things I like, like almond, and oatmeal, and cinnamon, and vanilla ice cream.... that after I ate at a friend's house I baked it at home too, regardless of the look.
Given that the preparation takes about 10 minutes plus 30 minutes baking time, I would definitely say is worth the effort :).
It is an absolute beginner dessert, as soon as you trust your kid with a knife and handling the oven they can bake it on their own.
Ingredients (~8 portions)
4 large, sourish apples (like Jonagold), or 6 smaller ones, pealed, cut into ~1-1.5 cm cubes
1/2 lemon zest
75 - 100 g butter (~2/3 - 1 stick), depends how buttery you like it
2 dl rolled oats ( a bit less that a cup)
1 dl sugar (a bit less than 1/2 a cup), if you use brown sugar even better
1/2 dl almond, sliced
1-2 tsp cinnamon
vanilla ice cream or
whipped vanilla cream
You can consider adding 1/2 dl raisins..
Peal and cut the apples into cubes (~1 - 1.5 cm cubes) and sprinkle them with the lemon zest (helps them keep the nice color).
Spread the apple in a buttered tray (20x30 cm, but size is not critical) evenly. Sprinkle generously with cinnamon, add the almonds, evenly distributed on top of the apples (sprinkle again with cinnamon), add the oatmeal evenly spread (sprinkle with cinnamon :)), and last pour the melted butter mixed with the sugar on top of everything.. Do not mix them yet in the tray!!
Bake them in a preheated oven at 200 C (400 F) for 20-25 minutes. After 20-25 minutes with a spoon mix the ingredients lightly so that the apple from the bottom is mixed with the oatmeal and almond, and the oatmeal gets to soak in the apple's juice . Bake for additional 5-10 minutes (the baking time is all together 30 minutes). The earlier you mix them, the softer the oatmeal gets, decide or try whether you like it more crispy or more soft. I like it crispy, so I mix them only about 5 minutes before removing it from the oven.
Serve while still warm with vanilla ice cream, I just love the warm apple-cinnamon-oatmeal with the melting vanilla ice cream on top..
You can serve it with whipped vanilla cream as well if you don't have, or like, ice cream.
Have a nice sunshiny day!