• Caramel sauce: Make at least an hour ahead.
• Preheat the oven to 350℉ and a line an 8x8 baking pan with parchment paper and set aside.

For the Brown Butter

• Melt butter in a medium sauce pan on medium heat. Stir the butter to make sure it melts evenly. Once the butter is completely melted, it will start to foam up. Continue stirring the butter. As it cooks, it will start to change into a deeper color. This could take 6-8 minutes.

  You'll start to notice a nutty aroma and the butter will begin to have brown specs at the bottom of the pan. The entire process of browning butter from start to finish should not take more than 10 minutes on medium heat.
  11 tbsp (155 g) unsalted butter
• Once butter is browned, pour it into a heat proof bowl and set it aside to cool for about 5 or 10 minutes.

Crust and Topping

• Wet Ingredients: In a medium bowl, add (slightly cooled) brown butter and brown sugar and mix using a spatula. Add the egg and vanilla extract and mix.
  ¾ cup (150 g) brown sugar, 1 large egg, 1½ tsp vanilla extract
• Dry Ingredients: Add the flour, quick oats, salt, and baking powder and mix.
  1 cup (90 g) quick oats, 1 cup (120 g) all purpose flour, ½ tsp baking powder, ½ tsp salt
• Spread in pan: Place ⅔ of the dough into the bottom of an 8x8 pan and spread it out completely.
• First bake: Bake for 13 minutes, then allow to cool while prepping apples.
• Prep Apples: Dice the apples, then mix together with sugar, cinnamon, nutmeg and flour.
  2 cups diced apples, ¼ cup (50 g) granulated sugar, 2 tbsp all-purpose flour, 1 tsp cinnamon, ⅛ tsp nutmeg
• Layer: Add the apples to the baked crust, then drizzle the caramel sauce on top.
  ½ cup caramel sauce
• Add remaining dough: Take the remaining dough and add it to the top of the caramel. Just flatten each piece a little with your fingers and place them all around. It won't cover the entire pan, but that's ok.
• Second bake: Place back in the oven for 30-35 minutes until the top is golden brown and the caramel is bubbly.
• Cool: Remove from the oven and cool for at least 2 hours before slicing and enjoying.
• Top with sea salt, vanilla ice cream, and caramel sauce.