Crumble ground beef in a 2 quart glass dish. Microwave on high for 5
minutes, stirring occasionally. Drain excess fat. (I use a plastic
colander). Stir into meat mixture the onion, garlic powder, chili
powder, cumin, tomato sauce and water. Microwave on 70% power for 5
minutes. In a 2 quart round casserole, alternate layers of 1
tortilla, 1/6 of meat sauce, and 1/6 of cheese, making a torte like
casserole. The last layer should be cheese. Cover and microwave at
70% power until torte is bubbly hot and cheese is melted (about 5
mintues).