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1
Working in batches, cook the bacon in a 12-inch skillet over medium heat until crisp, about 8 minutes per batch.
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2
Transfer to a paper-towel-lined plate and drain off all but 1 Tbsp of the fat.
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3
Return the pan to medium heat, add the garlic, and cook until fragrant, about 30 seconds.
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4
Stir in the spinach and cook until just wilted, about 30 seconds longer.
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5
Season to taste with salt and pepper.
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6
Heat a panini or sandwich press according to the manufacturers instructions.
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7
(Alternatively, heat a nonstick grill pan over medium-high heat.
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8
).
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9
While the press is heating, arrange the spinach on 4 pieces of the bread.
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10
Top each with some bacon, mozzarella, and tomato, sprinkle lightly with salt, and complete each sandwich with a slice of the remaining bread.
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11
Brush both sides of the sandwiches with the oil.
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12
Put the sandwiches on the press, pull the top down, and cook until browned and crisp and the cheese is melted, 3 to 6 minutes, depending on how hot your machine is.
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13
(If using a grill pan, put a heavy pan on top of the sandwiches and cook, turning the sandwiches over once).
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14
Carefully remove from the press and serve.
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15
*For faster and less splattering you can make the bacon in the microwave, I prefer to cook it on the stove but its up to you.
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16
Enjoy.
