Clotilde’s Crumble Ratio

1/4 cup salted butter, diced
1/4 cup plus 1 tablespoon) granulated sugar
3/4 cup oatmeal (instant or old-fashioned)
2/3 cup ground almonds (a.k.a. almond powder or almond meal)

In a food processor cream together the butter and sugar until light and fluffy. Add in the oatmeal and ground almonds, and mix again until the mixture forms coarse crumbs. You can also rub it all in a mixing-bowl with your clean little fingers. (This will keep for a few days, tightly covered and refrigerated.)
Topping will become brown and crispy in about 40 minutes.