Healthy Blueberry Oatmeal Breakfast Bars - Recipes by Clare

Ingredients

• 1 cup plain flour
• 3/4 cup old-fashioned oats
• 1/2 cup white sugar
• 1/4 cup dark brown sugar
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon sea salt
• 1/2 cup unsalted butter, melted
• 1 large egg yolk
• 1 tablespoon dark brown sugar (extra)
• 2 cups blueberries, fresh or frozen
• 2 tablespoons fresh lemon juice
• 1/4 cup white sugar
• 2 teaspoons cornstarch