In a small bowl, add the saffron threads and 3 tablespoons warm water, let set 10 minutes to steep. Using a mini mortar pestle grind the saffron .
Heat olive oil over medium heat in a large wide flat-bottomed pan or paella pan.
Add onions and bell peppers, cook until tender, about 5 minutes.
Add garlic, green beans, tomato purée,smoked paprika, red pepper flakes and cook another 3 - 5 minutes stirring frequently.
Add the rice, water , seasoning cube , saffron and salt.
Gently move the vegetables around so the rice falls to the bottom of the pan .
Bring to a boil, reduce heat to medium or medium-low and cook at a continuous gentle boil, uncovered, for 20 minutes.
Do not stir the rice, one can use a wooden spoon to give gentle stirs .
If liquids seem to boil off too quickly, add a little extra warm water/stock.
After 15 minutes of cooking, scatter the peas and chickpeas on top.
Once the water has almost absorbed turn off heat and bring down the pan , cover with a foil and then with a kitchen towel for about 10 minutes .
This will allow the rice to absorb any remaining liquid as well as steam the peas. Once done, lightly fluff the rice and serve.
Serve garnished with chopped parsley and lemon wedges .
Enjoy straight from the pan or serve on a platter .