1. In a saucepan, bring the equivalent of 6 large glasses of water to a boil and then dissolve the bouillon cube in it.
2. Sauté the garlic and onion, chopped into small pieces, in olive oil for a few minutes.
3. Add the zucchini, sliced into rounds, the bell peppers, cut into small strips, and the rice.
4. Sauté the mixture, stirring constantly, for a few minutes.
5. Lightly salt, pepper, and add a few pinches of thyme.
6. Pour the equivalent of 2 large glasses of broth and let the mixture absorb over high heat.
7. Repeat this step 2 more times during cooking, stirring gently until the rice becomes tender (add water if needed to prevent sticking).