Dark Oak Stairs is a block that allows mobs and players to change elevation without jumping.
To make Dark Oak Stairs, you will need just two things that are Dark Oak Tree Logs and Dark Oak Tree Planks. Please follow the following steps to make Dark Oak Stairs.
Dark Oak Wood Logs
In order to make Dark Oak Stairs, the basic item you will need is Dark Oak wood log. Find a Dark Oak tree and use your iron axe to chop it down and pick up two pieces of Dark Oak logs. You can find Dark Oak trees in the Roofed Forest Biome.
Dark Oak Wood Planks
After that you will need to craft Dark Oak wood planks using the crafting table. Go towards the crafting table and open up 3*3 crafting grid. Add Dark Oak wood blocks in the center or any cell of the grid and you will get eight Dark Oak wood planks from two Dark Oak logs in the right-side box of the crafting table. Add these Dark Oak planks into your inventory.
Dark Oak Stairs
Now you can craft Dark Oak Stairs using the crafting table. Place Birch wood planks on 3*3 crafting grid in the same way as shown in the following image. You will get Dark Oak stairs in the right-side box of the crafting table. Remember to bring these into your inventory.