It's not really springtime until you've had rhubarb! Ingredients with an asterisk (*) are available seasonally right here in North Iowa! Click on select ingredients to find them nearby or stop by your local farmer's market.
Preheat oven to 375. Chop rhubarb into ¼ inch slices and put into an 8x8 baking dish. Add the juice of one small lemon (or approx 1 - 2 tbsp) and sugar. Stir to coat.
In a food processor, add your butter, brown sugar, flour, cinnamon, and salt. Pulse a few times until pea-sized clumps form. Add in oats and process until you reach a sandy texture.
Crumble the oat mixture on top of the rhubarb. Gently press. Bake for 40 to 50 minutes. Serve warm with ice cream!