Combine rhubarb, strawberries and lemon juice in 2-quart saucepan. Cover- cook over medium heat, stirring occasionally, until fruit is tender (8 to 12 minutes).
Combine ½ cup sugar and cornstarch in small bowl, stir into fruit mixture. Continue cooking, stirring constantly, until mixture comes to a boil (after about 1 minute). Continue boiling until thickened-remove from heat, and set aside.
Preheat oven to 350°F. Combine all crust ingredients in large bowl. Combine by hand or with an mixer on low speed, scraping bowl often, until mixture resembles coarse crumbs.
Reserve 1½ cups of the crumb mixture. Press the rest of the crumb mixture onto bottom of a greased 13x9-inch baking pan. Spread filling over crust. Sprinkle with reserved crumb mixture.
Bake for 30 to 35 minutes or until golden brown. Cool completely before cutting into squares and serving.
Notes
*If you don't have quick oats, you can pulse some old fashioned oats in a food processor to break them down a bit :)
Recipe adapted from: Land O'Lakes
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