Microwave chips in bowl for 20 seconds. Stir and repeat until almost all the chips are melted. Continue stirring to melt the last few chips. (if you microwave too long, you can easily burn the chocolate)
Mix in almonds and toffee pieces. Stir to coat and drop spoonfuls of the almond mixture onto a parchment lined sheet. Sprinkle with extra toffee pieces, if desired.
Cool until chocolate is hard.
Recipe by Alison's Allspice at https://www.alisonsallspice.com/toffee-dark-chocolate-almond-clusters/