The most time consuming thing about sour cherries is pitting them. I generally enjoy it, though I've found my fave thing is to sit and watch a Lynx game while pitting. I just use my fingers to push the pit out - be aware that bright red juice sometimes squirts out, covering any nearby surface (it washes off easily). 6 cups of cherries takes me about half of a game (30-45 minutes).
I have made a few different versions of this crisp - and this is my favorite version so far. I am also attempting to make a tart cherry vishniac (Romanian sour cherry brandy) that includes fermenting the cherries in sugar for 2 weeks before adding vodka, which I'll post if it turns out.
Sour Cherry Crisp
6 cups pitted sour cherries
1/2 c. sugar
1-2 T cornstarch (opt)
Topping:
1 1/4 c gluten free oats
stick of butter, softened
1/2 c sugar
1/2 c sliced almonds
1/2 tsp salt
Preheat oven to 375. Mix cherries, sugar and cornstarch together. I have made this both with and without cornstarch: I usually pit my cherries a day or two before making the crisp, in which case I can pour off excess juice (which is delicious) and thus have not really needed the cornstarch. I did use it in this most recent batch because I was making it a bit bigger. Pour cherry mixture into large baking dish (9").
Mix topping together, creaming the butter into the oats/sugar/almonds with a wooden spoon until the mixture is very course and crumb-like. Spread the topping evenly over the crisp, and bake at 375 for 50 minutes. The cherries will bubble up through the topping a bit. Let crisp sit for 15 minutes before eating to allow it to set/cool.
This is delicious warm or cold, served with some kind of dairy/faux dairy product (cream, whipped cream, coconut cream, ice cream...you get the idea), though it is good plain too.