Heat olive oil in saucepan over medium heat.
Add onion; cook 3–4 minutes until soft.
Stir in garlic; cook 30 sec.
Add tomato paste; stir 1 min.
Add rice; stir to coat, toast 2–3 min.
Season with salt, pepper, oregano.
Add diced tomatoes; stir.
Pour in broth; bring to boil.
Reduce heat, cover, simmer 18–20 min.
Remove from heat; rest 5 min.
Fluff with fork; stir in fresh basil.