I omitted the onion, cucumber, and ranch dressing and used a sauce called Tzatziki--Delicious!
Tzatziki Sauce
Peel and deseed a cucumber
Food process and finely chop cucumber
Use a coffee filter to drain the liquid out of the cucumber
1 to 2 cloves of garlic chopped fine with a pinch of kosher salt. Grind garlic down to a paste
16oz sour cream
½ freshly squeezed lemon
2-teaspoon olive oil
Mix all ingredients together and season with salt to taste