Best Rhubarb Curd Squares Recipes

RHUBARB BARS WITH SHORTBREAD CRUST

Steps:

• Begin by prepping the rhubarb: chop the rhubarb into bite size pieces. I like to split each stalk at least in half lengthwise (if not thirds) so that you don't get any huge chunks. After slicing, chop into 1/2 to 1 inch pieces.
• Add all the rhubarb to a bowl, along with 1/2 cup grenadine syrup. Stir it all together so that the rhubarb is coated. Let sit for 1-2 hours on the counter stirring occasionally, or even overnight (put it in the fridge, covered, if you go overnight.) This is to get the rhubarb a nice bright red color. It is not a necessary step but it sure is pretty!* When you are ready to make the rhubarb bars, drain the rhubarb in a colander.
• While the rhubarb soaks, prepare the shortbread crust. Preheat the oven to 375 degrees F.
• Line an 8x8 or 9x9 inch square pan with parchment paper, or spray with nonstick spray. Set aside.
• In a large bowl or stand mixer, add 1 cup (2 sticks) softened butter. Beat until smooth and creamy, making sure to scrape the sides and bottom of the bowl.
• Add 3/4 cup granulated sugar and beat again for at least 1-2 minutes, stopping to scrape the sides and bottom, until the mixture is light and fluffy.
• Add 1 and 1/2 teaspoons vanilla extract and beat.
• Add 2 cups of flour, spooned and leveled, and 3/4 teaspoon kosher salt.
• Beat in the flour and salt until the mixture has come together and has formed a ball. Scrape sides as necessary. Do not over mix; beat just until the flour is combined and then no more (otherwise your shortbread will be tough).
• Divide the dough into two, one with a little more than half the dough. (Cover the smaller piece of dough and put it in the fridge.)
• Press a little more than half of the dough into the prepared square pan. Getting your hands a little damp can be helpful. I like to leave the edges raised a half inch or so, so that you have a bit of crust on the edge pieces, but pressing it all flat will work too. If you have time, chill the dough for a few minutes, 10-20 minutes is best. Cold dough going into a hot oven makes for very tender shortbread.
• Bake the crust at 375 for about 15 minutes, or until light brown on the edges. My shortbread puffed up in the middle even though I had made a raised crust, so I gently pressed the center back down with the back of a spoon, when it was very hot from the oven still.
• Set the crust aside and let cool for a few minutes.
• Leave the oven on but lower the temperature to 350 degrees F.
• Meanwhile, prepare the rhubarb filling: drain the rhubarb in a colander or strainer. Add your red rhubarb to a medium bowl.
• Stir in 3/4 cup sugar (add a couple extra tablespoons if you skipped the grenadine soak*).
• Add 1/4 cup all purpose flour and stir.
• At this point you can add 1 tablespoon lemon juice and 1 teaspoon zest, but it is optional. It brightens up the flavor of the rhubarb, but you can definitely taste the lemon. Feel free to add just the juice and skip the zest for a milder hint of lemon. If you are a rhubarb purist, skip the lemon entirely.
• Pour the rhubarb filling over the baked crust.
• Use you fingers to break off medium pieces of shortbread from your stash in the fridge. Check the photos to see the size we're talking. I like big ol chunks. You don't have to cover the rhubarb entirely.
• Bake the rhubarb bars in the oven at 350 for about 45-50 minutes. The bars are done when the shortbread on top is golden in several spots across the top. A fork should also slide easily into a piece of rhubarb; it should be completely tender.
• Let the bars cool completely. I stuck mine in the freezer to speed this up.
• If you would like to top with a vanilla glaze, in a medium bowl combine 1 cup powdered sugar with 2 teaspoons milk, 1/2 teaspoon vanilla, and a pinch of salt. Whisk until smooth. Drizzle over the top of the cooled bars and let the glaze set up for 20-30 minutes before slicing and serving.

RHUBARB CUSTARD BARS

Steps:

• Heat oven to 325 degrees and line a 9-by-9-inch pan with parchment paper, leaving two edges long so they overhang the pan by at least 1 inch. (This is for lifting the bars out later.)
• In a food processor, pulse together flour, sugar and salt. Add butter and process until a crumbly dough forms. Press dough into the lined pan in an even layer. Don't clean out the food processor, you're going to need it.
• Bake crust until golden at the edges, 35 to 40 minutes, rotating halfway through. Transfer to a wire rack and raise oven temperature to 350 degrees.
• While the crust is baking, make the filling. In a medium saucepan, combine the rhubarb slices and 1 cup sugar. Cook, stirring frequently, over medium-low heat until rhubarb releases its juices. Raise heat and bring to a simmer. Keep simmering, stirring once in a while, until the rhubarb breaks down completely, about 15 to 20 minutes. Transfer the rhubarb and juices to the food processor, and let it sit with the cover off until it cools down a bit, about 15 minutes.
• Meanwhile, using a vegetable peeler, lay the very pink rhubarb stalk on its narrower side. From the edge of the stalk, peel a long strip from the stalk. Continue to peel strips from the stalk, flipping it around the other side to keep it even. (This makes it easier to peel, but don't worry too much about getting uniform strips.) Line up peeled strips and cut into 1 1/2-inch lengths. Some may curl up, and that's fine. You'll have about 1 cup strips.
• To the food processor, add the eggs, remaining 1/4 cup sugar, lemon juice, flour, zest and salt, and pulse until mixture is puréed. Pour into baked shortbread base, and carefully scatter the rhubarb strips on top. It should look a little like confetti. Bake until the filling is set and puffy, 20 to 30 minutes. Transfer to a wire rack to cool completely in the pan.
• Once cool, use a butter knife to cut at the edges of the crust to release them from the pan, then use the parchment "handles" to lift up and transfer the pastry to a cutting board. Cut into 1 3/4-inch squares. Dust with confectioners' sugar before serving.

RHUBARB CUSTARD BARS

Steps:

• In a bowl, combine the flour and sugar; cut in butter until the mixture resembles coarse crumbs. Press into a greased 13x9-in. baking pan. Bake at 350° for 10 minutes. , Meanwhile, for filling, combine sugar and flour in a bowl. Whisk in cream and eggs. Stir in the rhubarb. Pour over crust. Bake at 350° until custard is set, 40-45 minutes. Cool. , For topping, beat cream cheese, sugar and vanilla until smooth; fold in whipped cream. Spread over top. Cover and chill. Cut into bars. Store in the refrigerator.

RHUBARB SHORTBREAD BARS

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• Mix 1 cup flour, butter, and confectioners' sugar together in a bowl; pack the mixture firmly into the bottom of a 9-inch square baking dish.
• Bake in preheated oven until the crust hardens slightly and is very fragrant, but not yet browned, about 15 minutes.
• Whisk brown sugar, eggs, white sugar, 1/4 cup flour, and salt together in a bowl until completely smooth; add rhubarb and stir to coat. Pour the rhubarb mixture over the crust.
• Bake in oven until the rhubarb mixture sets, about 40 minutes; cool at least 10 minutes before cutting into bars.

RHUBARB CURD

Steps:

• Place chopped rhubarb in a medium-sized saucepan. Add sugar, water, lemon juice, and salt. Bring to a boil over medium heat, reduce heat to medium-low and cook, stirring occasionally, until rhubarb is soft, about 10 minutes.
• Pour rhubarb mixture into a mini food processor or blender; blend until smooth, 10 to 20 seconds. Reserve 1/3 cup and return remaining rhubarb mixture to saucepan over low heat.
• Whisk egg yolks together in a small bowl. Slowly add reserved rhubarb mixture, whisking constantly. Slowly whisk egg-rhubarb mixture back into the saucepan and continue whisking for 5 minutes, or until mixture is thickened and the curd coats the back of a metal spoon. Whisk in butter until melted and fully incorporated.
• Pour into a sterile jar and cool. Curd keeps in the refrigerator for up to 1 week.

RHUBARB BARS

Steps:

• For the bars: Preheat the oven to 350 degrees F with a rack in the middle.
• Grease and line a 9-inch square baking pan with parchment paper. Cut enough so there are wings hanging over the sides of the pan for when it's time to remove the bars!
• In a food processor, combine the flour, almond flour, granulated sugar and salt and pulse to combine. Add the butter, egg white and rosewater, if using. Pulse until the mixture clumps together into small to medium clumps of dough.
• Pour the dough out into the prepared pan and press evenly all around the bottom with a measuring cup or the back of a spatula until smooth.
• Bake until the crust is just set and the edges are light golden, 15 to 18 minutes. Remove to a rack to cool. Reduce the oven temperature to 325 degrees F.
• For the filling: Combine the rhubarb in a medium saucepan with water just to cover (about 1 1/2 cups water) and 1/4 cup granulated sugar. Scrape in the vanilla bean seeds and add the pod. Simmer until the rhubarb is falling apart, about 10 minutes. Cool, then strain and discard the solids. (See Cook's Note.)
• Add 1/4 cup of the reserved rhubarb juice to a small mixing bowl. Add the cornstarch. Use a small whisk or fork to combine until smooth and there are no cornstarch lumps. Add the rhubarb slurry to the saucepan with an additional 1/2 cup of the reserved rhubarb juice. (See Cook's Note for uses for any extra juice).
• Whisk in the eggs, yolks, salt, remaining 1 1/4 cups granulated sugar and 2 tablespoons lemon juice. Cook, whisking constantly, over medium heat until the mixture begins to simmer and thicken and bubbles pop to the surface, 7 to 10 minutes. Whisk in the zest, then the butter and coconut oil a little at a time. Whisk in just enough food coloring to make a salmon pink color, 2 to 3 drops.
• Pour the filling mixture over the cookie crust and bake until the edges are set, but the center is just a tiny bit jiggly, 25 to 30 minutes. Remove to a rack to cool completely.
• Once cooled, remove the bars from the pan. With a sharp knife, cut into 16 squares, wiping the blade after each cut. (You can also trim the edges for a cleaner look.) Dust with powdered sugar before serving.
• For longer storage, refrigerate between layers of parchment in a sealed container.