Rhubarb–Brown Butter Bars

Name: Rhubarb–Brown Butter Bars
Ingredients: Zest and juice of ½ grapefruit or 1 orange; 3 dried hibiscus flowers (optional); ¾ cup (150 g) granulated sugar; ¼ tsp. kosher salt; 1 vanilla bean, split lengthwise (optional); 1 lb. rhubarb, sliced crosswise into ½”-thick pieces (about 4 cups), divided; Nonstick cooking oil spray; 1¼ cups blanched hazelnuts, raw pecans, and/or raw or blanched almonds; ¾ cup (1½ sticks) unsalted butter, cut into pieces; 1¼ cups (156 g) all-purpose flour; 1¼ cups (125 g) old-fashioned oats; ¼ cup plus 1 Tbsp. (packed; 63 g) dark brown sugar; ¼ cup (50 g) granulated sugar; 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt; ½ tsp. baking soda; Dried hibiscus flowers, also called Jamaica flowers, are available at Latin markets and some natural foods stores.

"Think of your favorite granola packed full of nuts and surrounding a layer of sweet-tart rhubarb jam and you’ve got these bars...."

INGREDIENTS

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Zest and juice of ½ grapefruit or 1 orange

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3 dried hibiscus flowers (optional)

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¾ cup (150 g) granulated sugar

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¼ tsp. kosher salt

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1 vanilla bean, split lengthwise (optional)

•

1 lb. rhubarb, sliced crosswise into ½”-thick pieces (about 4 cups), divided

•

Nonstick cooking oil spray

•

1¼ cups blanched hazelnuts, raw pecans, and/or raw or blanched almonds

•

¾ cup (1½ sticks) unsalted butter, cut into pieces

•

1¼ cups (156 g) all-purpose flour

•

1¼ cups (125 g) old-fashioned oats

•

¼ cup plus 1 Tbsp. (packed; 63 g) dark brown sugar

•

¼ cup (50 g) granulated sugar

•

1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt

•

½ tsp. baking soda

•

Dried hibiscus flowers, also called Jamaica flowers, are available at Latin markets and some natural foods stores.

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