Clean & cook potatoes in their skins for 1 hour or until completely tender. Remove from heat & drain. Pour cold water into pan. Repeat until potatoes are cool enough to handle, then cut into fourths. Do not remove skins. Place in large bowl.
Clean & cook green beans on stove for 1 minute on high and 11 minutes on low. Beans can be as you prefer them, al dente to soft. When done, drain & put in bowl with potatoes. Add onion & olives. Add salt and pepper (about 1 Tbsp of salt & 2 tsp. of pepper to start). Mix lightly.
Make Good Seasons Cheese & Garlic Salad Dressing according to package, increasing the vinegar from 1/4 cup to 1/3. All else remains the same. Add the Dijon mustard to the mix & stir or shake until completely mixed.
Add grated cheese & dressing (complete amount) to the potatoes, green beans and other ingredients and mix thoroughly. Refrigerate until very cool, mixing several times.