Preparation Pulse onion in a food processor until finely chopped. Transfer to a medium bowl. Repeat with fennel, carrot, and celery, placing vegetables in bowl with onion. Heat 2 tablespoons oil in a large pot. Add pancetta and cook, stirring often, until golden brown, about 3 minutes. Add spelt and cook, stirring often, until grains are a couple of shades darker, about 3 minutes. Add onion, fennel, carrot, celery, and garlic to pot; season with salt and pepper. Cook, stirring occasionally, until vegetables are softened, 6–8 minutes. Add tomato paste and red pepper flakes, and cook until paste is slightly darkened, about 1 minute. Add broth to pot, bring to a boil, reduce heat, and simmer, partially covered, until spelt is tender, 60–70 minutes. Stir escarole and beans into soup and cook until escarole is wilted and beans are warmed though, about 4 minutes. Serve soup drizzled with oil and topped with Parmesan. DO AHEAD: Soup can be made 2 days ahead. Cover and chill. Also try it with:Semi-pearled farro or wheat berries
Preparation Pulse onion in a food processor until finely chopped. Transfer to a medium bowl. Repeat with fennel, carrot, and celery, placing vegetables in bowl with onion. Heat 2 tablespoons oil in a large pot. Add pancetta and cook, stirring often, until golden brown, about 3 minutes. Add spelt and cook, stirring often, until grains are a couple of shades darker, about 3 minutes. Add onion, fennel, carrot, celery, and garlic to pot; season with salt and pepper. Cook, stirring occasionally, until vegetables are softened, 6–8 minutes. Add tomato paste and red pepper flakes, and cook until paste is slightly darkened, about 1 minute. Add broth to pot, bring to a boil, reduce heat, and simmer, partially covered, until spelt is tender, 60–70 minutes. Stir escarole and beans into soup and cook until escarole is wilted and beans are warmed though, about 4 minutes. Serve soup drizzled with oil and topped with Parmesan. DO AHEAD: Soup can be made 2 days ahead. Cover and chill. Also try it with:Semi-pearled farro or wheat berries