01 -
Get the oven going at 200°C.
02 -
Mix the butter, milk, and garlic powder with the cooked potatoes and mash everything until creamy.
03 -
Boil the potatoes until you can easily poke them with a fork, then drain the water out.
04 -
Lay out the veggies in one layer on a baking tray and let them roast in the oven for 20 to 25 minutes until they’re soft and slightly browned.
05 -
Coat the green beans, tomatoes, and onions with olive oil, salt, and pepper until they’re evenly covered.
06 -
Put the roasted veggies and creamy mashed potatoes on plates and enjoy.