Follow these simple steps to create your own Gooey Coffee Caramel Cake:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, granulated sugar, cocoa powder, baking powder, and salt until well combined.
3. Prepare Wet Ingredients: In a separate bowl, mix the cooled brewed coffee, melted butter, eggs, and vanilla extract. Whisk until smooth.
4. Combine Mixtures: Gradually add the wet mixture to the dry mixture, stirring gently until just combined. Avoid overmixing.
5. Add Caramel: Fold in half of the caramel sauce into the batter. The batter will be thick, which is perfect for holding the gooey center.
6. Pour Batter: Pour the batter into the prepared baking pan, smoothing the top evenly.
7. Bake: Place the pan in the preheated oven and bake for 40-45 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
8. Cool the Cake: Remove the cake from the oven and let it cool in the pan for about 20-30 minutes.
9. Add More Caramel: Once cooled, drizzle the remaining caramel sauce over the top of the cake for that extra gooey goodness.
10. Optional Topping: If desired, whip the heavy cream until soft peaks form and spread it over the cake. Sprinkle with sea salt for added flavor.