Mushroom-Bean Bourguignon

In a Dutch oven, heat 2 tablespoons oil over medium-high heat. Add carrots and onions; cook and stir 8-10 minutes or until onions are tender. Add garlic; cook 1 minute longer. Remove from pan., In same pan, heat 1 tablespoon oil over medium-high heat. Add half the mushrooms; cook and stir until lightly browned. Remove from pan; repeat with remaining 1 tablespoon oil and mushrooms., Return all mushrooms to pan. Add tomato paste; cook and stir 1 minute. Stir in wine, 1-1/2 cups broth, salt, thyme, pepper and carrot mixture; bring to a boil. Reduce heat; simmer, covered, 25 minutes., Add beans and pearl onions; cook 30 minutes longer. In a small bowl, whisk flour and remaining broth until smooth; stir into pan. Bring to a boil; cook and stir until slightly thickened, about 2 minutes.