Simmer until the blueberry sauce is thick enough to coat the back of a metal spoon, about 5 minutes. (nutritionrefined.com)
Cook and stir over medium - low heat until thickened and a thermometer reads 160 ° or is thick enough to coat the back of a metal spoon. (piarecipes.com)
Pour the chocolate coated crumbs into the spring - form tin and press down firmly with the back of a metal spoon. (chocchick.com)