In a separate pan, saute onions in butter. Add red peppers after 2-3 minutes. Add zucchini after 2-3 minutes. Add rice; mix and saute for 2 minutes. Add wine and cook until evaporated, around 1-2 minutes.
Add 1 cup water to the saute. Once it is nearly absorbed, add a second cup of water. Repeat this water treatment for 20 minutes, or until rice is al dente.