On the entire surface of the loaf, make deep cuts with a “mesh” – first into slices along, and then across. Do not cut to the end (the bottom crust must remain intact).
Place the slices of cheese between the pieces of bread.
Mix oil, chives, and poppy seeds.
Spread the onion mixture over the loaf on top and between the pieces of bread.
Wrap the loaf in foil and place on a baking sheet. Bake the snack bread with cheese and onions for 15 minutes at 175 degrees.