Prep Time: 15
Cook Time: 30
Serves: Serves: 6
Cook pasta in salted water for half the time the package directs. (Pasta will be very firm but will cook further later.) Reserve 1/2 cup of the pasta cooking water. Drain pasta; rinse with cold water and drain again. Return to pot; add 1 Tbsp. oil and set aside.** (At this point, pasta may be covered and refrigerated up to 1 day.)
Heat remaining 2 Tbsp. oil in a large deep skillet over medium-high heat. Add garlic; cook and stir 30 seconds. Add oregano; cook and stir 30 seconds. Add 1 cup broth and the salt; bring to a simmer. Add pasta; simmer 1 minute. Add remaining broth; simmer until liquid is absorbed and pasta is tender but firm, 5 to 6 minutes, stirring occasionally.
Stir in spinach in batches, turning with tongs and stirring into mixture until wilted. Stir in 1-1/2 cups Salsa Rosa; heat through. Thin with reserved pasta water if desired. Remove from heat; stir in cheese. Serve immediately.
DIRECTIONS FOR SALSA ROSA: Coat the bell peppers lightly with 1 Tbsp. oil; place on a foil-lined baking sheet. Bake in a preheated 450°F oven 30 minutes, turning peppers three times until peppers are blistered all over. Transfer to a large bowl; cover with plastic wrap and let stand until cool enough to handle, about 15 minutes. Peel off and discard skin from bell peppers; discard stems and seeds.
Heat remaining 1 Tbsp. oil in a small skillet over medium-low heat. Add chili pepper(s); cook until browned on all sides, about 5 minutes. Remove from skillet; let cool. Add garlic to hot oil; cook and stir 1 minute. Add oregano; cook and stir 30 seconds. Add tomato and salt; cook and stir 1 minute. Peel off and discard skin from chili pepper(s); discard stems and seeds.
Combine bell peppers, chili pepper(s) and tomato mixture in a food processor or blender container. Process or blend until fairly smooth. Add the vinegar and pepper to taste; process or blend to combine. Taste and adjust seasonings. Use immediately or cover and chill up to 5 days or freeze up to 3 months.