01 - Combine warm milk and yeast in a large bowl. Let stand for 5 minutes until mixture becomes frothy, indicating the yeast is active.
02 - Add melted butter, granulated sugar, egg, and salt to the yeast mixture. Whisk until well combined. Gradually incorporate flour, mixing until a soft, tacky dough forms.
03 - Turn dough onto a lightly floured surface and knead for 6-8 minutes until smooth and elastic. Place in a greased bowl, cover with plastic wrap or a clean towel, and let rise in a warm area for 1 hour until doubled in size.
04 - Toss diced strawberries with cornstarch in a small bowl until evenly coated. Set aside to allow cornstarch to activate while preparing remaining filling ingredients.
05 - Combine brown sugar and ground cinnamon in a separate bowl, mixing thoroughly to ensure even distribution of cinnamon throughout the sugar.
06 - Punch down risen dough and roll into a 16x12-inch rectangle. Spread softened butter evenly over dough surface, leaving a small border at edges. Sprinkle cinnamon sugar mixture, then distribute cornstarch-coated strawberries over the top.
07 - Roll dough tightly from the long edge into a log. Using a sharp knife or dough cutter, slice into 12 equal rolls. Place rolls in a greased 9x13-inch baking pan, leaving space between each for expansion.
08 - Cover pan with a towel and let rolls rise for 30-45 minutes in a warm, draft-free area until puffy and nearly doubled in size.
09 - Preheat oven to 350°F. Bake rolls for 22-25 minutes until tops are golden brown and filling is bubbling around the edges. Remove from oven and let cool in pan for 10 minutes before glazing.
10 - Beat softened cream cheese and butter until smooth and creamy. Add powdered sugar and vanilla extract, mixing until combined. Gradually add milk, 1 tablespoon at a time, until desired spreading consistency is reached.
11 - Spread glaze generously over warm rolls. Serve immediately while still slightly warm for the best texture and flavor experience.