1/2 c. oil
3 tbsp. vinegar
1 clove garlic, crushed or minced (optional)
1/2 tsp. salt
1/8 tsp. pepper
About 3 med. zucchini, sliced very thin
1/4 c. thinly sliced onions

Mix oil, vinegar, garlic, salt and pepper. Pour over zucchini and onions; toss. Cover and chill 1 hour or longer.