In a small bowl, stir together the mashed strawberries and sugar until the sugar dissolves and the mixture becomes syrupy. Set aside.
In a mixing bowl, beat mascarpone, heavy cream, powdered sugar (or honey), and vanilla extract until smooth and fluffy — about 2–3 minutes using a hand mixer on medium speed.
Assemble the tiramisu.
Briefly dip each ladyfinger into the strawberry juice — just 1–2 seconds per side to prevent them from getting soggy.
Line the bottom of a small dish (8x8 or similar) with a single layer of soaked ladyfingers.
Spread half of the mascarpone cream over the ladyfingers.
Spoon over half of the strawberry mash mixture.
Repeat with another layer of soaked ladyfingers, followed by the remaining mascarpone cream.
Top with the remaining mashed strawberries and smooth into an even layer. Garnish with diced strawberries.
Cover and refrigerate for at least 4 hours (overnight is best for flavor and texture). Serve chilled and enjoy.
Notes
Use ripe, fragrant strawberries — underripe berries will make the dessert taste flat. If your berries are out of season, add a squeeze of lemon and a tiny pinch of salt to the strawberry mash to boost flavor.
Chill your mixing bowl and beaters before whipping the cream and mascarpone. This helps the cream whip faster and creates a more stable, fluffy texture.
Whip just until soft peaks form — overwhipping can make the mascarpone grainy or stiff. Stop when the mixture looks pillowy and holds soft ridges when you lift the beaters.
Layer gently, don’t press down. The ladyfingers are fragile — stack and spread the mascarpone carefully to maintain the dessert’s airy structure.
Give it time. Four hours is the minimum; overnight is ideal. This allows the flavors to meld and the ladyfingers to soften perfectly.
Serve cold, not room temp. This helps the cream hold its shape and keeps the texture light and mousse-like.