Chunks of millionaire's caramel krispie squares on wax paper
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5 from 8 votes

Millionaire's Caramel Krispie Squares

Millionaire’s Caramel Krispie Squares are a no-bake twist on classic Millionaire’s Shortbread: layers of marshmallow rice krispie treats, thick caramel and milk chocolate. Stacked up, that’s a real treat.
Prep Time30 mins
Cook Time15 mins
Cooling/ Setting Time1 hr
Total Time1 hr 45 mins
Course: Baking, Dessert
Cuisine: American
Keyword: caramel, caramel krispie treats, krispie treats, millionaire's krispie squares, millionaires caramel, millionaires shortbread, no bake, rice krispies, traybake
Servings: 16 squares
Calories: 263kcal
Author: Jane Saunders | LittleSugarSnaps

Equipment

Ingredients

For the base:

  • 25g/ 1oz unsalted butter
  • 150g/ 5oz marshmallows
  • 90g/ 3oz rice krispies

For the Caramel

  • 1 x 397g/ 14oz tin condensed milk
  • 110g/ 4oz dark brown sugar
  • 85g/ 3oz unsalted butter
  • 2 tbsp golden syrup
  • Pinch of salt

For the topping:

  • 150-200g milk chocolate (depending how thick you like that top layer)

Instructions

  • Grease and line the baking tin with baking parchment
  • Cube the butter and put it, along with the marshmallows, into a heavy based pan set over a medium heat. Stir frequently until everything has melted
  • Add the cereal and mix until thoroughly coated
  • Working quickly, tip the mixture into the baking tin and, using a piece of baking parchment, press it firmly down, so that it spreads into all of the corners and you get a compact, level surface. Set aside to cool completely (about 30 minutes)
  • Put all of the caramel ingredients into a heavy based pan set over a medium heat. Stir frequently until the sugar has dissolved
  • Turn up the heat slightly, and allow to boil gently until the temperature reaches 112°C – 115°C (234°F – 240°F). This is the soft ball stage. If you do not have a sugar thermometre, you can test for readiness by dropping a small amount of the caramel into some chilled water - it should form a firm ball that does not flatten when removed from the water, but squishes when squeezed
  • Once the caramel is ready, take the pan off the heat and plunge the bottom of it into cold water to stop the cooking process. Set aside and allow to cool for 10 minutes
  • Stir well, then pour over the cooled base. Set aside for at least 2-3 hours to firm up and cool completely
  • Finally, melt the chocolate and spread over the caramel layer. Allow to cool and set before cutting into squares (tip: if you can be patient, using a warm knife to score through the chocolate helps to stop the chocolate cracking in all directions and gives you neater squares).
  • Keep in an airtight container for up to 3 days

Nutrition

Calories: 263kcal | Carbohydrates: 40g | Protein: 3g | Fat: 11g | Saturated Fat: 7g | Cholesterol: 23mg | Sodium: 73mg | Potassium: 135mg | Fiber: 1g | Sugar: 33g | Vitamin A: 612IU | Vitamin C: 4mg | Calcium: 80mg | Iron: 2mg