Preheat oven to 375°F.
Spread minced garlic on cookie sheet sprayed with non stick spray.
Place pan in preheated oven on the bottom rack and bake until just golden. Watch carefully and do not overcook. Remove from oven and set aside.
Place butter into a medium skillet. Place over medium heat.
When butter has melted and is hot (do not burn), add crushed garlic cloves and 2 cups of cream. Cook, stirring constantly, and bring to a boil. Cook at a low boil for about 5 minutes Remove from heat.
Remove garlic cloves from cream.
In large pot or slow cooker, add dry soup mix.
Stir in hot cream mixture.
Add minced or puréed onion, oven-roasted garlic, baked and cubed potatoes, 4 cups boiling water and remaining 2 cups cream.
Place over low heat and cook until heated to eating temperature.
Taste. Add salt and white pepper, to taste.