Raspberry-Rhubarb Slab Pie Recipe

“Slab pie” is a pastry baked in a jelly-roll pan and cut in slabs like a bar cookie—or a pie bar, if you will. My grandfather was a professional baker and served pieces of slab pie to his customers back in the day. Here is my spin, featuring rhubarb and gorgeous red raspberries. —Jeanne Ambrose, Milwaukee, Wisconsin

Raspberry-Rhubarb Slab Pie

Photo by Taste of Home©

Yield: 24 (2 dozen) Servings

Ingredients: 

  • 3-1/4 cups all-purpose flour
  • 1 teaspoon salt
  • 1 cup butter
  • 3/4 cup plus 1 to 2 tablespoons 2% milk
  • 1 egg yolk
  • 2 cups sugar
  • 1/3 cup cornstarch
  • 5 cups fresh or frozen unsweetened raspberries, thawed and drained
  • 3 cups sliced fresh or frozen rhubarb, thawed and drained

VANILLA ICING:

  • 1-1/4 cups confectioners’ sugar
  • 1/2 teaspoon vanilla extract
  • 5 to 6 teaspoons 2% milk

Directions:

  1. In a large bowl, combine flour and salt; cut in butter until crumbly. Whisk 3/4 cup milk and egg yolk; gradually add to flour mixture, tossing with a fork until dough forms a ball. Add additional milk, 1 tablespoon at a time, if necessary.
  2. Divide dough in two portions so that one is slightly larger than the other; wrap each in plastic wrap. Refrigerate 1 hour or until easy to handle.
  3. Preheat oven to 375°. Roll out larger portion of dough between two large sheets of lightly floured waxed paper into an 18×13-in. rectangle. Transfer to an ungreased 15x10x1-in. baking pan. Press onto the bottom and up sides of pan; trim pastry to edges of pan.
  4. In a large bowl, combine sugar and cornstarch. Add raspberries and rhubarb; toss to coat. Spoon into pastry.
  5. Roll out remaining dough; place over filling. Fold bottom pastry over edge of top pastry; seal with a fork. Prick top with a fork.
  6. Bake 45-55 minutes or until golden brown. Cool completely on a wire rack.
  7. For icing, combine confectioners’ sugar, vanilla and enough milk to achieve a drizzling consistency; drizzle over pie. Cut pie into squares.

Editor’s Note: If using frozen rhubarb, measure rhubarb while still frozen, then thaw completely. Drain in a colander, but do not press liquid out.

Nutritional Facts
1 piece equals 247 calories, 8 g fat (5 g saturated fat), 29 mg cholesterol, 159 mg sodium, 42 g carbohydrate, 2 g fiber, 3 g protein.
Originally published as Raspberry-Rhubarb Slab Pie in Taste of Home April/May 2012, p40

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