Can I make the filling ahead of time?
Yes. Mix the pistachio paste with shredded phyllo dough and store in an airtight container for up to 2 days before assembling and baking.
What if I don't have pistachio paste?
You can substitute with almond butter or tahini, though flavor will differ. Grind roasted pistachios with a small amount of oil if paste isn't available.
How do I know when the brownie cups are done baking?
Bake until a toothpick inserted into the brownie (not the filling) comes out with a few moist crumbs. Overbaking will dry out the chocolate ganache.
Can these be frozen?
Yes. Cool completely, wrap individually in plastic wrap, and freeze for up to 3 weeks. Thaw at room temperature before serving.
What size cups or molds should I use?
Standard muffin tins work well for individual brownie cups. Adjust baking time if using different-sized cups.