Lentil and Brown Rice Tacos

3/4 cup dry lentils (brown ones)
3/4 cup dry brown rice
4 cups water
4 beef bouillon cubes (or chicken, vegetable)
4 teaspoons chili powder
1 teaspoon cumin
2 teaspoons onion powder
1/2 teaspoon garlic powder

Dump everything in a medium pot and boil.
Turn down the heat to a little lower than medium and cook covered (just like rice) until done.
I usually stir every 5-6 minutes, but you probably don't need to once the spices are mixed!
Use just like regular taco filling.