Step 1

Preheat oven to 350°F (175°C).

Step 2

For the cookie batter: In the bowl of your mixer, beat together the oil and sugar. Add the eggs. With a spoon, gently mix in ground almonds, potato starch, and salt. Add the chopped pecans and chocolate chips and mix well.

Step 3

For the cake: In the bowl of your mixer, beat eggs, oil, sugars, and vanilla. Add cocoa, coffee, and potato starch. In a small bowl, mix baking soda and vinegar, and then mix with the batter.

Step 4

Pour chocolate cake batter into a nine- by 13-inch (20x30-centimeter) baking pan. Then add the cookie dough, in tablespoon-sized drops, over the top of the chocolate cake. (It should look polka dotted.) Bake for 45 minutes.

Step 5

If desired, make the frosting by mixing all ingredients together. Pour over cooled cake.