Sauté the spinach:
In a medium skillet, heat olive oil over medium heat. Add garlic and cook for 30 seconds until fragrant. Add spinach and cook until wilted, about 2 minutes. Remove from heat and let cool slightly.
Blend the beans:
In a food processor, combine cannellini beans, yogurt, Parmesan, lemon zest, lemon juice, red pepper flakes, and 1 tablespoon water. Blend until smooth.
Combine and warm:
Add sautéed spinach to the processor and pulse a few times to incorporate, leaving some texture. Season with salt and pepper to taste.
Serve warm:
Transfer to an oven-safe dish and bake at 350°F for 10–12 minutes, until heated through.
Serve with raw veggies (carrots, celery, bell peppers) or whole-grain crackers. Not a fan of spinach? Substitute roasted red peppers!