Russian Onion Souphttps://www.penzeys.com/shop/recipes/russian-onion-soup/Our Tsardust Memories brings tons of flavor to this simply delicious soup.1 Cup butter (2 sticks)4 large red onions, chopped3 Cups (any mix) sliced carrots and celery3 TB. TSARDUST MEMORIES2 TB. VEGETABLE SOUP BASE8 Cups hot waterChunks day-old bread or large croutons (we used sourdough—yum!), about 1/2 Cup per serving