Preheat the oven to 375 degrees Fahrenheit.

Peel and cut the Idaho or russet potatoes into 1-inch pieces.

Peel and cut the sweet potatoes into 1-inch pieces.

Peel, halve lengthwise, and slice the carrots into 1/2-inch thick pieces.

Peel and slice the yellow onion into 1/2-inch thick slices.

Dice the green bell pepper.

In a large bowl, combine the potatoes, sweet potatoes, carrots, onion, and bell pepper.

Add olive oil, salt, and pepper to the bowl.

Toss the vegetables to coat them evenly with the oil and seasonings.

Transfer the mixture to an oiled baking pan.

Cover the baking pan with foil.

Bake in the preheated oven for 30 minutes.

Remove the foil from the baking pan.

Stir the vegetables.

Continue baking for another 30 to 45 minutes, or until the vegetables are tender.

Preheat the broiler.

Place the baking pan under the preheated broiler about 3 inches from the heat.

Broil until the vegetables are golden brown.