Ingredients

• 1 cup all-purpose flour
• 1 cup brown sugar
• 0.75 cups oats
• 0.5 cups melted butter
• 1 teaspoon ground cinnamon
• 4 cups diced rhubarb
• 1 cup white sugar
• 1 cup water
• 2 tablespoons cornstarch
• 1 teaspoon vanilla extract

Instructions

1. 1 Gather all ingredients.
2. 2 Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.
3. 3 Mix flour, brown sugar, oats, butter, and cinnamon together in a bowl until crumbly. Press 1/2 of the oat mixture into the bottom of prepared baking dish.
4. 4 Sprinkle rhubarb over oat mixture.
5. 5 Combine white sugar, water, cornstarch, and vanilla in a saucepan over medium heat; cook and stir until thick and clear, about 5 minutes.
6. 6 Pour sugar mixture over rhubarb.
7. 7 Sprinkle remaining oat mixture over rhubarb.
8. 8 Bake in the preheated oven until the crisp is lightly brown and bubbling, about 1 hour.

Nutrition per serving