Extra Chewy Brownies

70 grams butter/margarine
2 eggs plus 1 egg yolk, cold
1 teaspoon vanilla
3/4 cup cocoa powder
1/3 cup canola oil
1/2 cup flour
1/8 teaspoon bicarbonate of soda
1 tablespoon corn flour
1 teaspoon salt (Maldon is for sure best)
100 - 120 grams 60% dark chocolate, broken in squares
1: Preheat the oven to 160 C and spray a 8x 8 square brownie tin *
2: Place butter and sugar in a bowl and microwave till the butter has melted then whisk in the eggs, extra yolk, and vanilla.
3: Stir in the oil, cocoa, flour, bicarbonate of soda and salt and mix till combined.
4: Spread the batter in the prepared tin, arrange the chocolate blocks in rows so that each brownie has a molten middle, and push down slightly so that they are covered by batter and they don't scald while baking.
5: Bake at 160 C for approximately 40 minutes until the top is set and crusted over. Be careful not to overcook.
6: Allow to cool completely before cutting in squares and store in an airtight container. Scatter over more Maldon when serving if you so choose which, obviously, I would!
* Big Deal in Raanana sells a great square tin that is perfect for brownies. You can find rectangular trays too which are fine but don't go too big as there won't be enough batter to make a decent depth brownie.