Preheat your oven to 350°F (175°C) and line a baking tray with parchment.
Beat the eggs and sugar together until they’re light and fluffy about 3–4 minutes. This gives your sponge its bounce.
In a separate bowl, mix the pistachio flour, all-purpose flour, and baking powder.
Fold those dry ingredients slowly into your egg mixture.
Stir in the milk.
Spread the batter thinly and evenly onto the baking sheet.
Bake for 10–12 minutes, just until lightly golden.
Cool completely, then cut out circles slightly smaller than your dome molds.Tip: If your circles aren’t perfect nobody will know. They get tucked underneath!