(From The New Best Recipe page 280.)
3 Tbls unsalted butter
1 small (or one half large) onion, minced
1 medium carrot (or 4 baby carrots), minced
1 28 oz. can diced tomatoes
Salt
2 Tbls minced fresh basil (preferred) or parsley
Melt butter then cook vegetables over medium heat until vegetables are soft but not browned, 10 minutes.
Add tomatoes and 1/2 tsp salt. Simmer until slightly thickened, 10 minutes.
Stir in basil.
We discovered this back in Philly when looking for sauce for fresh ravioli purchased from the Italian Market. We now make this quick sauce all the time and always enjoy it.