Prep Butter: In a small bowl, add very soft butter, basil, and garlic powder. Mix well.
Slice Baguette: Slice your baguette lengthwise. You can choose to either assemble like this, or halve so that you have 4 pieces that are about 9 inches long.
Fill Sandwich: On the top half of the baguette, spread a thick layer of the basil butter spread. On the lower half, add a layer of tomatoes, gruyere cheese slices, arugula, and pickled onions. Top with buttered baguette half.
Slice and Serve: Gently cut the baguette into 4 pieces (will be approximately 4 1/2 inches long) and serve!
Notes
Makes approximately 4 sandwiches that are about 4 1/2 inches long, nutritional value per sandwich. Soften ButterBe sure that your butter is very soft so that it can be mixed well with garlic powder and basil. Do not melt in the microwave, instead, fill a glass with boiling water (or heat water in the glass in the microwave until it boils), then empty the water and place the now hot glass over the butter. Let sit for 5-10 minutes until the butter is soft. CustomizeAdd more or less of any filling to fit your taste! Soften BaguetteYou can soften a hard baguette by drenching it in cold water, wrapping it in foil, and then placing it in a (cold) oven. Set the temp to 300 degrees F and then let it bake for about 12-15 minutes. Remove from foil and bake for another 5 minutes. SubstitutionsCheese: We love hard nutty cheese for this sandwich, so if you don't have gruyere, manchego, gouda, or cheddar.Baguette: Our Vietnamese Baguettes are a great choice, too! LayeringWe've found that the best layering is to put the tomatoes down first on the baguette half that does not have the butter basil spread. This will allow the juice of the tomatoes to soak into the bread. But you can layer it however you desire!