For the Dough:
- 2½ cups all-purpose flour, divided
- 2½ cups bread flour, divided
- ⅓ cup granulated sugar
- 2 packets (4½ teaspoons) Fleischmann’s® RapidRise® Instant Yeast
- 1 teaspoon kosher salt
- 1½ cups water
- 6 tablespoons unsalted butter
- 1 large egg
For the Filling:
- ⅔ cup strawberry jam
- 1 cup fresh strawberries, chopped into small bits
- 1 tablespoon ground cinnamon
For the Frosting:
- 4 tablespoons unsalted butter, room temperature
- 3 cups confectioners' sugar
- 4–6 tablespoons whole milk
- 1 teaspoon pure vanilla extract
- Sliced strawberries, for garnish