3 tablespoons chocolate chips, or more to taste
1 tablespoon olive oil
2 tablespoons coconut flour
2 tablespoons water
1/8 teaspoon baking soda
1 drop coffee-flavored extract (optional)
1. Combine chocolate chips and olive oil in a microwave-safe mug; heat in microwave until melted, 20 to 30 seconds.
2. Stir coconut flour, water, and baking soda into chocolate mixture using a fork. Add egg and coffee extract to chocolate mixture; stir well.
3. Heat in microwave until cake is cooked through, about 1 1/2 minutes. Cool cake for about 2 minutes before eating.