• Spray a 9x13 baking dish with non-stick cooking spray and set aside.

For the Dough

• Heat milk for 35-40 seconds in the microwave or until warm (100 degrees F)
• In a small bowl, whisk together the yeast, 1 teaspoon sugar, and 1 tablespoon of milk. Let the mixture sit for 4-5 minutes or until it becomes foamy.
• Using a stand mixer, with the dough hook attachment, place flour, butter, eggs, salt, yeast mixture, remaining milk, and sugar into the bowl of the mixer.
• On medium speed, knead dough until a ball forms. Add additional flour, 1 tablespoon at a time, if needed.
• Once the dough ball is formed, place it into a lightly oiled bowl and cover with a clean kitchen towel. Let rise in a warm place until the dough has doubled in size, about 1 hour.

Cream Cheese Filling

• In a large mixing bowl using a hand mixer, beat cream cheese until light and fluffy, about 2-3 minutes.
• Add egg yolks, sugar, vanilla, and vanilla extract. Beat for 2 more minutes or until fully combined.

Blueberry Filling

• In a small sauce pan over medium heat, add blueberries, sugar, cornstarch, vanilla extract and water.
• Stir to combine and cook, stirring constantly, until the blueberries have burst and has thickened. Remove from heat and let cook.

Assembling the Rolls

• Once dough has risen, transfer onto a floured surface and shape into a rectangle.
• Using a rolling pin, roll dough out into a large rectangle about ¼ inch thick.
• Spoon cream cheese mixture over dough, making sure the entire dough is cover.
• Now, spoon cooled blueberry mixture over the cream cheese mixture. Spread evenly over the entire rectangle.
• Tightly roll dough into a log shape and pinch the end together to seal.
• Cut the log into 2 inch slices, ending with 8 rolls.
• Place into the prepared 9x13 baking dish, cover with a kitchen towel and let rise.
• Preheat the oven to 350 degrees.
• Once rolls have risen, bake in the preheated oven for 35 minutes or until fully baked and golden brown.

Cream Cheese Frosting

• In a medium bowl, beat cream cheese, butter, vanilla, and powdered sugar with a hand mixer until creamy and well incorporated.
• When rolls are removed from the oven, cover with frosting.