In a large bowl, combine the flour, yeast, and salt.
Gradually add the lukewarm water and mix until a shaggy dough forms.
Turn the dough out onto a lightly floured surface and knead for 8-10 minutes until smooth and elastic.
Place the dough in a greased bowl, cover with a damp cloth, and let it rise in a warm place for 1-2 hours, or until doubled in size.
Gently punch down the dough and divide it into two equal portions. Shape each portion into a baguette.
Place the shaped baguettes on a baking sheet lined with parchment paper. Cover and let them rise for another 30 minutes.
Preheat your oven to 450°F (230°C) with a baking stone or sheet inside.
Score the top of each baguette with a sharp knife or razor blade.
Carefully transfer the baguettes to the preheated oven. Add some water to a pan at the bottom of the oven for steam. Bake for 20-25 minutes, or until golden brown and crispy.
Let the baguettes cool on a wire rack before slicing and serving.
Notes
For an extra crispy crust, create steam in the oven by placing a shallow pan of water on the bottom rack while baking.