Actually, only a small corner of the state of Texas is desert. The rest of the state is not desert. Nevada is the state with the most desert. Nearly the entire state is covered by deserts. However, Texas is the largest state with a desert.
Nevada!
The vast majority of Nevada is covered by deserts - the Great Basin Desert and the Mojave Desert.
Most of the state of Nevada is part of the Great Basin Desert. The southern tip of the state is part of the Mojave Desert.
There is no geographical feature which most people would describe as a 'desert' in the US state of Missouri.
These deserts extend into the state of Utah: Great Basin Desert Colorado Plateau Desert Mojave Desert
The Great Basin Desert covers most of Nevada. A small part of the Mojave Desert also enters the state.
Nevada is almost completely covered by deserts. The largest of these is the Great Basin Desert.
The Colorado Desert, part of the Sonoran Desert, is in the state of California.
Nevada - it is almost entirely covered in deserts.
The Chihuahuan Desert is a desert in southern New Mexico.
The Sahara Desert covers most of North Africa, including several countries. It is not found in the United States.