Heat Dutch oven on medium heat (5).
Cook bacon (about 10 minutes or until browned). Remove to drain on paper towels.
Discard all but 2 tablespoons of bacon fat.
With Dutch oven still on medium heat, add basil and garlic. Stir and cook 1-2 minutes, taking care to not scorch.
Add lemon juice and stir. Cook for 1 minute (which reduces the lemon juice liquid a bit).
Add stock/broth and bring to a boil on high heat (watching closely).
Add tortellini, reduce heat to low (2-3), and cook 10 minutes (uncovered).
Turn off heat and add cream, cheeses, and spinach. Stir and let sit uncovered about 5 minutes to thicken.
Crumble bacon over top and serve right away.
