Creating these scrumptious Cranberry Crumble Bars – Browned Butter Blondie is simple when you follow these easy steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease or line an 8×8-inch baking dish with parchment paper for easy removal.
2. Brown the Butter: In a saucepan over medium heat, melt the butter, stirring frequently until it turns golden brown and has a nutty aroma. Remove from heat and allow to cool slightly.
3. Mix Sugars and Eggs: In a large bowl, combine the browned butter, brown sugar, and granulated sugar. Whisk until smooth. Add the eggs and vanilla extract, mixing well.
4. Combine Dry Ingredients: In another bowl, whisk together the flour, baking powder, and salt. Gradually add this mixture to the wet ingredients, stirring until just combined.
5. Fold in Cranberries: Gently fold the cranberries and optional nuts into the batter until evenly distributed.
6. Prepare the Topping: In a separate bowl, combine oats, flour, cinnamon, and a pinch of salt. Mix in melted butter until crumbly.
7. Assemble and Bake: Pour the batter into the prepared baking dish, spreading it evenly. Sprinkle the crumbly topping over the batter. Bake for 30-35 minutes, or until golden brown and a toothpick inserted in the center comes out clean.