Here is one of my favorite recipes (only 2 Tbsp of oil for a very large batch, and only 1/4 cup brown sugar). (This is from Martha Stewart)
Homemade Granola
3 cups rolled oats
3/4 cup toasted wheat germ
3/4 cup walnuts, coarsely chopped
1/2 cup frozen apple juice concentrate, thawed
1/4 cup packed light-brown sugar
2 tablespoons vegetable oil
1/2 cup dried cherries, raisins, or other dried fruit, halved or chopped if large (optional) (I like raisins in here best myself)
1. Preheat oven to 300°. Lightly coat a 9-by- 13-inch baking pan with cooking spray. Add oats, wheat germ, and walnuts, stirring to combine. Bake until oats are lightly toasted, about 25 minutes, stirring halfway through. Raise oven temperature to 350°.
2. In a liquid measuring cup or small bowl, stir together apple juice, sugar, and oil. Pour over oat mixture; stir to combine. Return to oven, and bake until oats are crisp, about 30 minutes, stirring halfway through.
3. Cool in pan, about 25 minutes (toss with cherries, if desired). Transfer to a container with a tight-fitting lid. Store, covered, at room temperature for up to 1 month.
Make sure you don't overcook the oats...they are VERY easy to burn if you don't pay attention...I do this all the time

. We go through a batch or so of this a week and LOVE it! Hope this helps!