Jelly Slice

1 red or green jelly

1 pkt yo biscuits

6oz marg

1 tin condensed milk

2 lemons

1 dstspn gelatine

3/4 cup boiling water

Method: Make jelly first, crush biscuits, melt margarine & mix well. Press into a greased lamington tin 10 x 12". Beat condensed milk with juice of 2 lemons, add 1 dessertspoon gelatine to hot water to dissolve. Add to mixture (will be very thin but soon thickens). Pour immediately onto biscuit mixture. When mixture is set & jelly cool, pour jelly onto top of condensed milk. Leave to set & then cut into fingers.

Source: contributed by D. Huppatz, L. Gill & F. Langman in Cookbook: St Joseph's School, Clare (Clare: St Joseph's School, 1991), p.97.

Edit: I have made this in the past (with butter not marg.) and it was delicious: