Sift the flour in advance. Heat the water to just above room temperature. Wash the egg and separate the yolk. Prepare containers for mixing ingredients; line a baking tray with parchment paper.
Knead the dough. Add salt, sugar and instant yeast to the sifted flour in a bowl. Mix thoroughly. Make a small well in the center of the mixture and carefully pour lukewarm water into it. When the flour has absorbed all the water, add 50 g of cheese. Mix the mixture well again, then knead the dough until it becomes elastic.
Leave the dough to rise. When the dough becomes soft and tender, form it into a ball, then transfer it to a bowl lightly greased with vegetable oil. Cover it with cling film or a towel. Leave the bowl in a warm place for 1 hour, then knead lightly and leave for another 1 hour.
Form baguettes. Lightly flour your work surface. Lay out the finished dough and divide it into 4 equal parts. Form small balls and leave them for 5 minutes. Then form a future baguette from each piece, stretching it a little at the ends. Place the finished baguettes on a baking sheet at a short distance from each other, then leave them for 1 hour.
Place the baguette to bake. 20 minutes before baking, turn the oven to 250 degrees to preheat. Place a bowl of water at the bottom of the oven. Brush the dough with egg yolk and spread the remaining 50 g of cheese over it. Place the pieces to bake for 10 minutes. Then remove the bowl, reduce the temperature to 200 degrees and leave the baguettes in the oven for another 15 minutes.
Serve the delicious baguettes with cream cheese slightly cooled. You can use this bread as a snack for salads or soups.