1.Crumble The Ground Beef Into A 1 1/2 Quart Casserole Dish. Cover With Glass Lid. Cook In The Microwave For 5 Minutes On High. Drain, And Stir In Chili Powder, Salt, Garlic Powder, Cayenne Pepper And Water. Cover And Return To The Microwave. Cook For Another 3 To 4 Minutes On High. 2.Fill Each Taco Shell With About 2 Tablespoons Of The Ground Beef, Then Top With Desired Amounts Of Cheese, Lettuce, Onion, Tomato And Taco Sauce.