Broccoli and Cheddar Twice-Baked Potatoes

Ingredients:
4 medium russet potatoes, washed well and dried
1 teaspoon olive oil
3 and 1/2 tablespoons salted butter, very soft
1/2 cup non-fat Greek yogurt
1/4 cup buttermilk
1/2 teaspoon salt
1/2 teaspoon pepper
3/4 teaspoon chives
3/4 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon dried onion flakes
1/2 teaspoon dried dill weed
1/2 teaspoon paprika
1 and 1/2 cups cooked broccoli, chopped, divided
2 cups cheddar cheese, shredded, divided
Instructions: