Cut bread into 1/2" sized cubes and place in single layer on large baking sheet. You should have 5-6 cups cubed.
Combine butter and oil in measuring cup.
Add Parmesan cheese, garlic powder and Italian seasoning (or use dried basil & oregano) stirring until well combined.
Pour over bread cubes a little at a time, tossing and turning cubes to ensure an even coating.
Put in oven for 10 minutes, stir and keep baking for another 10 minutes.
Take out of oven and allow to cool. They will harden a little more once cooled.
Notes
Once cooled, store in an airtight container for 3-4 days. For long term storage, store in freezer. For a golden toasted color, turn heat higher but keep watch!