Salted chocolate cake with peanut butter maple icing

Ingredients

• 1/2 cup cocoa powder, sifted
• 1/2 cup boiling water
• 1 tsp sea salt flakes
• 2 tsp vanilla extract
• 1 cup coconut sugar
• 3 eggs
• 2/3 cup olive oil
• 1 1/2 cups almond meal
• 1/3 cup pure maple syrup
• 1/2 cup smooth natural peanut butter (see tip)
• 1 tbsp pure maple syrup, extra