Spinach Dip

I think I got this recipe from my aunt, but I'm not sure.

1 pkg. Knorr's Veg. Soup Mix
2 pkgs. cooked & well drained chopped spinach
2 cups sour cream
2 cups mayonnaise
6 cloves crushed garlic
1/4 cup chopped onion


Mix all ingredients together. Place in hollowed out pumpernickel bread.