Brush 1 side of each bread slice with 1/2 teaspoon oil. Spread 1/2 ounce goat cheese on other side of each slice. Layer beet, carrots, pear, and arugula on cheese side of 4 slices; drizzle with lemon juice, season with salt and pepper, and sandwich with remaining slices, cheese side down.
Heat a large nonstick skillet over medium. In two batches, cook sandwiches, pressing gently on tops with a spatula, until golden brown, about 3 minutes per side.
This recipe was awesome! I am always looking for whole food recipes to pin and share and try with my 90/10 nutrition challenge groups (www.tribasetraining.com/nutrition). This fit perfectly and was a big hit. Highly recommended. I did a bunch of Martha's veggie sandwiches one week and actually loved them all...big fan of veggie sandwiches now.