Heat olive oil in a wide paella pan over medium heat
Sauté chopped onion and garlic until softened
Add diced tomato and cook until reduced
Stir in smoked paprika and saffron
Add chicken, rabbit, shrimp, or other desired proteins and brown lightly
Add paella rice and stir to coat
Pour in hot stock and season with salt
Spread ingredients evenly and do not stir again
Add green beans, peas, or other vegetables if desired
Simmer until rice absorbs the liquid
Arrange seafood on top during the last few minutes if using
Cook until a socarrat forms on the bottom
Remove from heat and let rest briefly
Garnish with lemon wedges and serve