Cheesy Tomato Beans With Broccoli Rabe

Name: Cheesy Tomato Beans With Broccoli Rabe
Cuisine: Mediterranean, Italian, European
Ingredients: 4 garlic cloves; 3 Tbsp. extra-virgin olive oil, plus more for serving; 4 oil-packed anchovy fillets; 2 Tbsp. double-concentrated tomato paste; ½ tsp. crushed red pepper flakes, plus more for serving; 1 bunch broccoli rabe, trimmed, cut into 3" pieces; Kosher salt, freshly ground pepper; 1 14-oz. can whole peeled tomatoes, drained, tomatoes torn into pieces, liquid reserved; 2 15-oz. cans cannellini (white kidney) or other white beans, rinsed; 1 cup shredded low-moisture mozzarella; Finely grated Parmesan and toasted country-style bread (for serving)