Corned Beef and Swiss Dip

Step 1
Preheat the oven to 350 degrees F (175 degrees C).

Step 2
Heat oil in a skillet over medium heat. Cook and stir onion in the hot skillet until tender, 5 to 7 minutes.

Step 3
Transfer onion to a large mixing bowl. Add cream cheese, sour cream, and corned beef, then add mayonnaise, Swiss cheese, and garlic powder; mix until thoroughly combined.

Step 4
Cut off top of bread loaf. Create a bread bowl by tearing bread into chunks from the center of the loaf, leaving 1/2 inch bread on all sides. Reserve bread chunks for dipping if desired.

Step 5
Spoon corned beef mixture into bread bowl. Wrap bread bowl tightly with aluminum foil and place onto a baking sheet.

Step 6
Bake in the preheated oven until the dip is fully cooked and bubbling, 1 to 1 1/2 hours.