1️⃣ Prep & Preheat
Preheat oven to 350°F (175°C). Line a 9x9-inch pan with parchment paper.
2️⃣ Make the Crust/Crumble
In a bowl, mix flour, oats, brown sugar, baking soda, and salt.
Cut in cold butter with a pastry cutter (or fingers) until crumbly.
Press 2/3 of the mixture into the pan for the crust.
3️⃣ Prepare the Filling
Toss rhubarb, sugar, cornstarch, lemon juice, and vanilla.
Spread over crust, then sprinkle with remaining crumble.
4️⃣ Bake to Golden Perfection
Bake 40-45 mins until bubbly and golden.
Cool 1 hour before slicing (filling sets as it cools).
Pro Tips
🔪 Clean cuts: Chill bars 30 mins before slicing.
🍯 Extra sweetness: Drizzle with honey before serving.
🌿 Herb twist: Add 1 tsp fresh thyme to the filling.
Serving Ideas
🍦 À la mode – Vanilla ice cream is a must!
☕ With tea – Perfect for afternoon treats.
🎁 Gift idea: Wrap in parchment + twine.