I got this recipe from Allrecipes.com We like these with whole wheat, and we also like them all white flour.
1 cup all-purpose flour
4 cups whole wheat flour
1/2 cup shortening (I use olive oil)
2 teaspoons salt
1 1/2 cups boiling water
1 Tablespoon baking powder (I added this)
In a large bowl, stir together all dry ingredients. Cut in the shortening or oil until it is crumbly. Make a well in the center and pour in the boiling water. Mix with a fork until all of the water is evenly incorporated. Sprinkle with a bit of additional flour and knead until the dough does not stick to your fingers. The dough should be smooth.
Make balls the size of golf balls. Place them on a cookie sheet and cover with a cloth. Let stand for at least 1 hour, or up to 8 hours. (I have also made them right away and they were fine).
Heat a griddle or a large frying pan over medium heat. On a lightly floured surface, roll out tortilla to your preferred thinness. Fry one at a time. Place on the griddle for 10 seconds or until you see some bubbles on top. Flip the tortilla over and cook another 30 seconds or so. Repeat until all of the tortillas have been cooked. They can be frozen or refrigerated.