For the cookie layer: | |
| 1/2 cups | Unsalted butter, melted and cooled | 
| 1/2 cup | Light brown sugar | 
| 1/3 cup | Granulated sugar | 
| 1 | Large egg, room temp | 
| 1 tbsp | Vanilla extract | 
| 1 1/4 cups | All-purpose flour, spooned and leveled | 
| 1/2 tsp | Baking soda | 
| 1/2 tsp | Flaky sea salt | 
| 1 cup | Semi-sweet chocolate chips | 
For the brownie layer: | |
| 1 cup | Unsalted butter | 
| 1/2 cup | Cocoa powder | 
| 1 tsp | Vanilla extract | 
| 1/2 | Light brown sugar, spooned and leveled | 
| 1 3/4 cup | Powdered sugar | 
| 3/4 cup | Semi-sweet chocolate chips | 
| 1/3 cup | Semi-sweet chocolate, chopped | 
| 3 | Eggs, room temp | 
| 1/2 cup | All-purpose flour | 
|   | Pinch of salt | 
| 3 tbsp | Olive oil | 
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