Salty Almond Rhubarb Crisp

Name: Salty Almond Rhubarb Crisp
Ingredients: 1 1/2 pound rhubarb, cut into ½-inch pieces; 1/4 cup (84 grams) honey; 3 tablespoon orange or grapefruit juice (or 2 tablespoons lemon juice); 1 tablespoon orange, grapefruit, or lemon zest; 1 tablespoon (7 grams) cornstarch or all-purpose flour; 1/2 teaspoon coarsely ground black pepper (optional); 1 pinch kosher salt; 2 cup (178 grams) rolled oats; 3/4 cup (90 grams) all-purpose flour; 5 tablespoon (65 grams) light brown sugar; 1/4 cup (35 grams) roasted, salted almonds, hazelnuts, or pecans, roughly chopped; 3/4 teaspoon ground cardamom; 1/2 teaspoon kosher salt; 10 tablespoon (141 grams) unsalted butter, melted; Flaky sea salt