I used homemade Strawberry Rhubarb Jam I made last year 2020
That was my filling cut a corner.
CRUST
1 12 cups all-purpose flour
1 12 cups uncooked quick-cooking oats
1 cup firmly packed brown sugar
34 cup butter softened
12 teaspoon baking soda
14 teaspoon salt
FILLING
1 12 cups fresh or frozen unsweetened rhubarb, cut into 1/2-inch pieces
1 12 cups sliced fresh strawberries
1 tablespoon lemon juice
12 cup sugar
2 tablespoons cornstarch
DRIZZLE
34 cup powdered sugar
1 to 2 tablespoons milk
STEP 1
Combine rhubarb, strawberries and lemon juice in 2-quart saucepan. Cover; cook over medium heat, stirring occasionally, 8-12 minutes or until fruit is tender.
STEP 2
Combine 1/2 cup sugar and cornstarch in bowl. Stir into fruit mixture. Continue cooking, stirring constantly, 1 minute or until mixture comes to a boil. Continue boiling 1 minute or until thickened. Remove from heat. Set aside.
STEP 3
Heat oven to 350°F.
STEP 4
Combine all crust ingredients in bowl. Beat at low speed, scraping bowl often, until mixture resembles coarse crumbs.
STEP 5
Reserve 1 1/2 cups crumb mixture. Press remaining crumb mixture onto bottom of greased 13x9-inch baking pan. Spread filling over crust. Sprinkle with reserved crumb mixture. Bake 30-35 minutes or until golden brown. Cool completely.
STEP 6
Combine all drizzle ingredients in bowl. Drizzle over cooled bars. Cut into bars.
** USED my homemade jam dump and pour for your filling this recipe will be good with other fillings also..