Mars Bar Mud Cake

• butter, chopped↗400 g
• good-quality dark chocolate, chopped↗400 g
• cocoa powder↗1⁄2 cup
• caster sugar↗2 cups
• eggs, lightly beaten↗6
• self-raising flour↗1 1⁄2 cups
• (60 g) Mars bars, chilled, chopped2
• double heavy cream, to serve (optional)↗

Step-by-step instructions

1. 1

   Preheat oven to 160°C

2. 2

   Grease a 4cm-deep, 22.5cm x 28cm (base) slab pan. Line with baking paper, allowing 2cm overhang at both long ends.

3. 3

   Combine butter and dark chocolate in a large, heatproof, microwave-safe bowl. Microwave, uncovered, on MEDIUM-HIGH for 3 to 4 minutes (stirring every minute with a metal spoon) or until almost melted.

4. 4

   Add cocoa and whisk until smooth.

5. 5

   Add sugar and mix well. Add one third of the egg and stir to combine. Repeat process with egg in 2 batches.

6. 6

   Sift flour over chocolate mixture. Stir gently until just combined.

7. 7

   Pour mixture into prepared pan. Sprinkle Mars Bars over batter and press in slightly.

8. 8

   Bake for 60 to 65 minutes or until a skewer inserted into the centre has moist crumbs clinging.

9. 9

   Cool completely in pan.

10. 10

    Cut into squares. Serve with cream.