Heat the skillet over medium-high and add the olive oil and butter until the butter melts.
Add the minced garlic and cook, stirring, for about 30 seconds until fragrant.
Pour in the broth, heavy cream, and lemon juice, then add the sun-dried tomatoes and refrigerated ravioli; stir to combine.
Bring the mixture to a gentle bubble, then reduce heat to medium-low, cover the skillet, and cook for 5 minutes.
Uncover and stir the ravioli; if the sauce is still too thin, cover again and cook 1 more minute until slightly thicker.
Stir in the packed baby spinach and optional basil, cover, and let wilt for 1–2 minutes.
Season with salt and pepper to taste and sprinkle with freshly grated Parmesan if using; serve immediately.