Gooey Chocolate Caramel Cake

Mix the flour, sugar, cocoa, 1 teaspoon baking soda, and ¾ teaspoon salt. Stir until well combined. Cut the shortening into the flour mixture (I just used my fingers) until very fine crumbs form. It should look like a cake mix. Add the unsalted butter and milk; mix until a thick dough forms.

Melt the salted butter over medium low heat. Add the brown sugar, corn syrup, and 1 teaspoon salt; bring to a very low boil, stirring constantly. Let it cook over very low, gentle heat, so that the mixture is just barely bubbling if at all. If you heat it too much, it won't stay soft in the bars, so just heat it enough to thicken it slightly. After about 10 minutes, remove from the heat and stir in ½ teaspoon baking soda. The caramel will foam and bubble – stir or whisk until it's thick and creamy and mostly smooth.

Preheat the oven to 350. Spread half of the batter on the bottom of your baking dish. Cover with the chocolate chips and a layer of caramel (I recommend using about 2/3 of the batch that you just made and reserving the rest for something else). Spoon the rest of the dough over the caramel layer and spread until the pan is evenly covered. Bake for 25-30 minutes, depending on your pan size and how gooey you want it (see notes).

Remove from the oven and let stand for a few minutes before serving. Store at room temperature to keep it soft; it will firm up a little bit as you let it rest.