Dice your onion, garlic, and green peppers in a food processor or by hand.
Using a pot with matching lid, coat the bottom with the olive oil and heat over medium-high heat.
Once hot, add the diced onion, garlic, and green peppers and cook for about 3-5 minutes, until the onions are translucent.
Add the white cooking wine, tomato sauce, water, white wine vinegar, garlic powder, salt, onion powder, red pepper flakes, oregano, and bay leaves. Stir to combine.
Allow the sauce to come to a boil and in the meantime stuff your peppers.
To stuff your peppers cut the top off the bell peppers and remove the inside of the peppers. Stuff the inside with about ½ a cup of picadillo. Make sure not to throw away the top of the bell pepper.
Once the sauce is boiling, lower the heat to a medium-low heat to maintain a rolling simmer on the sauce.
Place the bell peppers in the pot and place the top of the bell peppers on the bell peppers. Place the lid of the pot on the pot.
Cook for 45 minutes or until you notice that the bell peppers become soft and wrinkly.
Remove from the pot and serve with rice, using the sauce to drench the bell peppers and rice.