Step 1

Butter a slice tray 16cm x 26cm x 3cm. Dissolve jelly in 1 and a 1/2 cups of boiling water, then place in fridge for about 45 minutes until cool (not set).

Step 2

Place biscuits in a food processor and pulse into a fine crumb. Transfer to a bowl and mix in melted butter. Press mixture firmly into lined slice tray. Refrigerate for 30 minutes.

Step 3

Dissolve gelatine in 1/2 cup hot water. Place condensed milk in a bowl and combine with gelatine mixture. Pour this mixture over biscuit base and return to fridge to set for 30 minutes.

Step 4

Pour cold red jelly on top of slice. Return it to the fridge. Once set, use a warm knife to slice into squares.