Heat the olive oil in a large skillet over medium heat. Add the onion and garlic and sauté until translucent (about 5 minutes)
Add the baby spinach and frozen peas to the skillet. Cook just until the spinach is wilted and the peas are bright green and heated through.
Transfer the sautéed mixture to a blender or food processor. Add the bone broth, ricotta, parmesan, lemon juice, salt, and pepper.
Blend on high until completely smooth and vibrant green. The bone broth will help everything emulsify into a smooth sauce. You can add more broth if needed to thin.
Toss with your favorite cooked pasta and serve immediately!