Flavored Yogurt and Granola
If that's your ideal breakfast, you may just need to tweak it a bit. Both store-bought granola and flavored yogurt (even reduced fat) are high in unhealthy added sugar.
Serve your family reduced-fat, plain yogurt instead. For flavor and texture, add fresh fruit and sprinkle it with oats, walnuts, flaxseeds, or chia seeds.
If you're set on store-bought granola, read the label. Sugar should not be among the first few ingredients.