Step 1: In a large mixing bowl, combine the flour, yeast, salt, and sugar. Whisk well to ensure everything is evenly distributed.
Step 2: Add the finely chopped jalapeños and shredded cheddar cheese to the dry mix. Stir them in well until they are all coated – you want every slice to have a bit of that cheesy, spicy goodness!
Step 3: Now, pour in the warm water and the olive oil. Mix it with a sturdy spoon or a spatula until everything is just combined. The dough will look pretty shaggy and sticky, and that's exactly what you want. Do not overmix or add more flour.
Step 4: Cover the bowl tightly with plastic wrap or a clean kitchen towel. Allow your dough to rise at room temperature for 12 to 18 hours. This long, slow rise develops incredible flavor and texture.
Step 5: When your dough is looking beautifully bubbly and risen, preheat your oven to a piping hot 450°F (230°C). While the oven heats up, place your Dutch oven (with its lid on) inside for a minimum of 30 minutes to get super hot.
Step 6: Lightly dust a sheet of parchment paper with a little flour. Gently transfer your risen, sticky dough onto the floured parchment paper. Try not to handle it too much to keep all those precious air bubbles!
Step 7: Carefully remove the scorching hot Dutch oven from the oven. Using the parchment paper as a sling, gently lower the dough (still on the parchment!) into the hot Dutch oven. Pop the lid back on.
Step 8: Bake for 30 minutes with the lid on. After 30 minutes, remove the lid. Continue to bake for an additional 10-15 minutes, or until that crust transforms into a deep, irresistible golden brown.
Step 9: Once beautifully browned, carefully remove the bread (again, using that parchment!) from the Dutch oven and transfer it to a wire rack. Let it cool completely before slicing to allow the internal structure to set and prevent a gummy texture.