Ingredients

• For the crumble
• 2 tablespoons white whole wheat flour (or all purpose)
  
• 2 tablespoons slivered almonds
  
• 2 tablespoons rolled oats
  
• ¹/₄ cup brown sugar
  
• ¹/₄ teaspoon salt
  
• 2 tablespoons unsalted butter
  

• For the cake
• 1 tablespoon butter, for greasing the pan
  
• 2 large eggs
  
• 1 ¹/₄ cups granulated sugar
  
• ¹/₂ teaspoon salt
  
• 1 teaspoon almond extract
  
• 6 tablespoons unsalted butter, melted
  
• 1 ¹/₄ cups white whole wheat flour (or all-purpose)
  
• 1 ¹/₂ cups rhubarb, cut into 1/2-inch pieces