Make the Dough:

1. Activate the yeast: In a small bowl, combine warm milk, sugar, and active dry yeast. Stir to dissolve and let it sit for 5-10 minutes until frothy.

2. Mix the dough: In a large bowl, combine melted butter, egg, and yeast mixture. Gradually add flour and salt, mixing until a dough forms.

3. Knead the dough: Knead the dough for 5-7 minutes on a floured surface until smooth and elastic. If using a stand mixer, knead with a dough hook for 4-5 minutes.

4. Let it rise: Place the dough in a greased bowl, cover with a towel, and let it rise for 1-1.5 hours until doubled in size.

Prepare the Strawberry Filling:

1. Cook the strawberries: In a saucepan over medium heat, combine chopped strawberries, sugar, cornstarch, and lemon juice. Stir until thickened (5-7 minutes), then remove from heat and let it cool.

Assemble the Rolls:

1. Preheat the oven: Preheat to 350°F (175°C). Grease a 9×13-inch pan.

2. Roll out the dough: Once the dough has risen, punch it down and roll it into a 12×18-inch rectangle.

3. Spread butter and filling: Spread softened butter over the dough, then spoon cooled strawberry filling evenly across.

4. Roll and cut: Roll the dough tightly and slice into 12-15 pieces. Place them in the prepared pan, cover with a towel, and let them rise for 30 minutes.

5. Bake the rolls: Bake for 25-30 minutes until golden brown.

Make the Cream Cheese Frosting:

1. Prepare the frosting: Beat cream cheese and butter until smooth. Add powdered sugar, vanilla extract, and heavy cream until smooth and spreadable.

Serve:

1. Frost and enjoy: Once the rolls cool for a few minutes, spread the cream cheese frosting on top and serve warm!