Preheat your oven to 350°F (175°C). Line a baking tray with parchment paper. This keeps the croissants from sticking and makes cleanup much easier after baking.

Using a bread knife, carefully slice each croissant across the middle. Do not cut all the way through. Leave one side attached to hold the filling inside.

Spread a thin layer of softened butter inside every croissant. This adds rich flavor and helps the pastry stay soft while warming in the oven.

Spread cream cheese evenly over the butter if using it. The creamy texture balances the fruity filling and makes every bite smooth and delicious.

Spread about two tablespoons of cherry jam inside each croissant. Cover the inside evenly so every bite has plenty of sweet cherry flavor.

Arrange sliced strawberries over the cherry jam. Place them evenly from one end to the other for balanced flavor and a beautiful presentation.

Drizzle vanilla extract over the strawberries. Sprinkle a little lemon zest if desired. These simple ingredients brighten the fruit flavor without making it overpowering.

Place the filled croissants onto the prepared baking tray. Bake for about eight minutes. The outside becomes lightly crisp while the filling turns warm and delicious.

Remove the croissants from the oven carefully. Dust them lightly with powdered sugar. Add fresh mint leaves for a fresh look before serving immediately.