Whoever says that Passover desserts don't taste as good as those served year-round has never tried these awesome brownies (or some of my family's other traditional Passover desserts, for that matter). These brownies are hands-down some of the best Passover brownies, if I do say so myself. Moist, rich, and full of awesome chocolate flavor, plus a hint of yellow-capped Coca-Cola. Who would ever guess they're gluten-free and kosher-for-Passover? PS. If soda is not in your diet, you can replace the soda with almond or cashew milk. Enjoy, y'all.
Preheat oven to 325°F.
Lightly grease a 13x 9-inch pan ( I recommend glass) with a tablespoon of oil.
In a saucepan, combine the oil, sugar, and soda, and set over medium-high heat. Bring the mixture to a boil and remove from heat. Add the chocolate chips and vanilla and stir until the chocolate is fully melted and the mixture is smooth. Allow to cool slightly. Transfer the chocolate mixture to a large bowl and add the eggs, one at a time, beating with a fork to fully incorporate. Mix together the potato starch, salt, and baking soda, and sift into the chocolate mixture a little at a time, beating/whisking in until fully incorporated and the mixture is smooth. Add the chopped pecans and mix to fully incorporate into the batter. Pour into the greased pan and bake in the center of the oven for 45-50 minutes, or until an inserted toothpick comes out somewhat clean, but still moist. (The brownies should coat the toothpick, but should not be runny. Most importantly the top should be set and brownies should be slightly pulling away from side of the pan.) Remove from the oven and let cool completely. Note:Baking the brownies in an aluminum pan might call for less time in the oven (about 35-40 minutes).
Chocolate Ganache Frosting
Using a double boiler (metal bowl on top of a pot of hot water), combine the sugar, soda, chocolate, cocoa powder, vanilla sugar, and oil, and cook, stirring constantly, until the mixture is smooth and creamy. Add the egg yolks and let cook for another two minutes. Remove bowl from heat and allow to cool slightly. Pour the frosting over the brownies and spread evenly across the top. Sprinkle with the chopped pecans and allow to cool in the refrigerator or freezer to allow for easier cutting.