Millionaires Caramel Slice

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Recipe's preparation

Preheat oven to 180°C. Grease and line a baking dish (30 x 20 cm) with baking paper and set aside.
Place butter into mixing bowl and melt 2 min/50°C/speed 1, or until the butter has melted.
Add flour, baking powder, sugar, coconut, or almond meal, and mix 10 sec/speed 4. Scrape down the sides of the mixing bowl with a spatula, then repeat mixing $TM$. Transfer into the prepared tin and press down to form a base.
Bake for 10 minutes (180°C). Set the base aside to cool in the tin (approx. 1 hour). Clean and dry mixing bowl.
If using the Thermomix condensed milk recipe, rinse out the bowl and follow the instructions.
Place condensed milk, butter, and golden syrup into the mixing bowl and cook 20 min/100°C/speed 3, placing the simmering basket instead of the measuring cup onto the mixing bowl lid.
Pour caramel filling mixture over the cooled base in a tin, then bake for a further 10 minutes (180°C) and set aside. Clean and dry mixing bowl.
Place chocolate into mixing bowl and grate 5 sec/speed 8. Scrape down the sides of the mixing bowl with a spatula.
Add butter and melt for 2 min 30 sec/50°C/speed 2, or until butter and chocolate are melted. Gently combine the rice bubbles with the chocolate mixture.
Pour rice bubble chocolate mixture over caramel filling and set aside to cool. Place into refrigerator for approx. 1 hour or until set. Once set, cut into slices and serve.