Preheat oven to 180°C (350°F). Grease a 9x13-inch baking dish lightly with butter.

Cube the bread slices into 1-inch pieces. Spread evenly in the bottom of the baking dish.

Place Canadian bacon slices over the bread cubes. Cut into smaller pieces if needed for even coverage.

In a bowl, whisk together eggs, milk, salt and black pepper until smooth and combined.

Stir half of the shredded cheese into the egg mixture for a creamy texture and flavor.

Pour the egg and cheese mixture evenly over bread and bacon layers. Press gently to soak bread in the mixture.

Sprinkle remaining cheese evenly over the casserole. Drizzle melted butter on top for richness.

Bake in preheated oven for 30–35 minutes, until eggs are set and the top is golden brown.

If desired, whisk Dijon mustard, lemon juice and a little melted butter for a quick Hollandaise-style topping. Pour over casserole before serving.

Garnish with fresh parsley. Slice into portions and serve warm for a hearty breakfast or brunch.