Burgundy Meatloaf In Sourdough

• 1 french bread sourdough
• 1 onion
• 1/4 mushroom (sliced)
• 450 gr beef top round (ground)
• 120 ml wine (red)
• 110 gr cheddar cheese (shredded)
• 30 ml catsup
• 3 gr garlic salt
• 1 gr thyme leaves