Step 4: Assemble the casserole
Fillings + garnish
- sourdough bread loaves, cubed300 g
- gruyere, shredded100 g
- whisked egg mixture
- cooked sausage & spinach
Lightly grease an 8x8-inch baking dish with butter or oil.
Spread most of the bread cubes across the bottom, followed by all of the sausage and spinach mixture. Scatter the remaining bread over the top, leaving some pieces sticking up above the filling.
Pour the egg mixture evenly over everything, giving it a moment to settle down between the bread pieces. Finish with the grated cheese over top.