1. Prepare the Strawberries:
- Preheat oven to 400°.
- Mix the sliced strawberries, granulated sugar, and balsamic vinegar in a bowl.
- Set aside to macerate (let the flavors meld) while you prepare the croutons.
2. Make the Croutons:
- Mix the brown sugar and salt in a small bowl.
- Toss the bread cubes with the melted butter in a large bowl.
- Add the brown sugar mixture to the bread cubes and toss to coat evenly.
- Spread the coated bread cubes on a baking sheet.
- Bake until golden brown, 8-10 minutes.
- Cool completely on the baking sheet.
3. Assemble the Salad:
- Strain the macerated strawberries, reserving the juice.
- Layer the Greek yogurt, cooled croutons, and strained strawberries in 8 small bowls.
4. Top and Serve:
- Top with the reserved strawberry juice to taste.
- Garnish with mint sprigs.
- Serve immediately, or refrigerate for up to 1 hour.