Here's one I made a few years ago from the Ball Blue Book.

Tomatillo Salsa, from the Ball Blue Book
Yield: About 2 pints

5 1/2 cups husked, cored and chopped tomatillos (about 2 pounds)
1 cup chopped onion
1 cup chopped green chile peppers
4 cloves garlic, minced
2 tablespoons minced cilantro
2 teaspoons cumin
1/2 teaspoon salt
1/2 teaspoon red pepper
1/2 cup vinegar
1/4 cup lime juice

Combine all ingredients in a large saucepot. Bring mixture to a boil. Reduce heat and simmer 10 minutes. Ladle hot salsa into hot jars, leaving a 1/4 inch headspace. Adjust two-piece caps. Process 15 minutes in a boiling-water canner.

Note: When cutting or seeding hot peppers, wear rubber gloves to prevent hands from being burned.

NCHFP has a good one that can be made with either green or red tomatillos.

Dave

Here is a link that might be useful: Green Tomatillo Salsa