Strawberry Rhubarb Skillet Crumble (naturally gluten free)

INGREDIENTS

scant 1 lb strawberries, washed, hulled and chopped

scant 1 lb rhubarb, washed, trimmed, and thinly sliced

1/2 cup

sugar

juice of 1/2 lemon

2 tbsp

oat flour

topping

1/2 cup

old fashioned rolled oats

1/2 cup

brown sugar

1/2 cup

oat flour

1/2 cup

ground hazelnuts

1 tsp

vanilla extract

5 tbsp

unsalted butter, divided, at room temperature