Cook tortellini according to package instructions. Drain and set aside.

Sauce: In a large saucepan over medium heat, add butter and cook until melted. Whisk in flour. Add garlic and and onion powder and cook, stirring, for 30 seconds. Slowly pour in milk and cream, whisking as you pour and stirring until smooth. Cook, stirring constantly, until mixture begins to simmer.

Add diced tomatoes, spinach, basil and oregano. Taste and season with salt and pepper or add more seasonings if desired. Add parmesan cheese and stir until melted.

Finish and Serve: Remove from heat. Stir in cooked tortellini. Serve warm with extra parmesan sprinkled on top, and crushed red pepper, if desired.