Rhubarb Crumb Cake - Andrew Zimmern

Ingredients

• 1 1/2 pounds chopped rhubarb
• 1/2 cup sugar
• 1 teaspoon lemon juice
• 2 tablespoons butter
• 1 cup all-purpose flour
• 1/2 cup brown sugar
• 1/2 cup butter
• 1/4 cup crushed toasted almonds or pecans
• 4 tablespoons butter
• 1 1/2 cups flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• Pinch of salt
• 1/4 teaspoon ground allspice
• 3/4 cup sugar
• 1 large egg, beaten slightly
• 2/3 cup buttermilk