Warm olive oil and butter in a large Dutch oven or stockpot over medium-high heat.
1 Tablespoon olive oil, 1 Tablespoon butter
Add onion, carrots, and celery. Sauté, stirring frequently, for 4-5 minutes.
1/2 medium yellow onion, 2 medium carrots, 2 stalks celery
Stir in the garlic and Italian seasoning. Cook for 30-60 seconds, just until fragrant.
3 cloves garlic, 1 teaspoon Italian seasoning
Pour in the broth, then add the beans and chicken. Bring liquid to a gentle boil.
6 cups low-sodium chicken broth, 1 (15 ounce can) Cannellini beans, 2-3 cups shredded chicken
Add the gnocchi and stir gently to break apart any clumps. Cook for 3-4 minutes, or as long as package directions state, until the gnocchi float to the top of the broth.
1 pound miniature potato gnocchi
Turn off the heat and stir in the spinach, lemon juice, parsley, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. The spinach will wilt in just a minute or two, during which you can sample the broth and season with more salt, pepper, or lemon to taste. Serve and enjoy!
2 cups baby spinach, 1 Tablespoon lemon juice, 1 Tablespoon chopped fresh parsley, kosher salt and black pepper