Place spinach into Classic Batter Bowl. Microwave, covered, on HIGH 2-3 minutes or until spinach is wilted. Carefully remove lid; press spinach to side of batter bowl using Small Mix ‘N Scraper®. Blot excess moisture with paper towels and set aside. Meanwhile, juice lemon using Citrus Press to measure 1 tbsp (15 mL). Grate cheese using Rotary Grater. Cut bell pepper into 1-in. (2.5-cm) pieces using Utility Knife.
Place garlic, capers, bell pepper and olives in Manual Food Processor; cover and pump handle until coarsely chopped. Add spinach, basil, cheese, oil, lemon juice and salt; process to desired consistency, removing lid and scraping down sides of bowl as necessary using Mini Mix ‘N Scraper®.