Plan your space: Choose a sturdy table. Place slow cookers at the back, bowls and spoons on the left, then soups, then toppings, then breads and salad at the end.
Add labels for each soup and note dairy-free or gluten-free.
Make the Tomato Basil Soup (Day Before): Sauté chopped onion, carrots, and garlic in olive oil until soft. Add crushed tomatoes, tomato paste, and vegetable broth. Simmer 30–40 minutes.
Blend until smooth. Stir in chopped basil, salt, and pepper. Add a splash of cream or coconut milk if you like it creamy.
Cool and refrigerate.
Make the Chicken Noodle Soup (Day Before): Sauté onion, carrots, celery, and garlic. Add broth, bay leaves, thyme, salt, and pepper. Add chicken (if raw, simmer until cooked; if rotisserie, add shredded meat later).
Simmer 30 minutes. Remove chicken, shred, and return to pot. Do not add noodles yet. Cool and refrigerate.
Make the Potato Leek Soup (Day Before): Clean leeks well, then sauté with onion and garlic in butter or olive oil. Add peeled, chopped potatoes and broth.
Simmer until tender. Blend until smooth. Stir in cream or half-and-half, salt, and pepper.
Cool and refrigerate.
Prep toppings and breads: Chop herbs, cook bacon, grate cheese, and portion into small bowls. Slice bread and wrap to keep fresh. Make salad and chill the dressing separately.
Day-of setup: Transfer soups to slow cookers on Low 2–3 hours before guests arrive.
Stir occasionally.
Cook noodles just before serving: Boil egg noodles separately until just tender. Rinse briefly to stop cooking. Keep warm.
Let guests add noodles to their bowls first, then ladle hot chicken soup over. This keeps noodles from getting mushy.
Arrange the bar: Put bowls and spoons first, then soups with ladles, then toppings in small bowls with spoons, then breads and salad. Place labels and note any allergens.
Temperature check: Keep soups at 140°F/60°C or warmer while serving. Stir every 30 minutes.
Replace lids to retain heat.
Refresh and tidy: Refill toppings, wipe drips, and swap serving spoons as needed. Keep extras warm in the kitchen if your slow cookers get low.