Wash the rhubarb and chop it grossly. Place it in a bowl.
Pour the strawberries, the sugar, the lemon juice, the cardamom and some grated ginger in the bowl and stir. Place the fruit into a baking tin with high edges.
Mix in a bowl the coconut oil, honey, rolled rye and flour and pour onto the fruits.
Bake for 20 to 30 minutes or until the rye will get a little brown.
Serve warm or cold with vanilla sauce, vanilla ice cream or whipped cream.
Recipe by The Adagio Blog at https://adagioblog.com/rhubarb-strawberry-rye-crumble/