Start by preheating your grill to medium high heat. Clean and oil the grates.
Slice both baguettes in half lengthwise and set aside.
While the grill is preheating melt the butter, on low, in a small sauce pot. Add in the garlic, a large pinch of salt, a small pinch of pepper and the green onions. Cook until the butter is melted and the garlic is fragrant. About 3-5 minutes.
Remove from heat and add in the basil, dill and tarragon. Stir to combine.
Once the grill is up to heat, grill the bread starting cut side down first. Grill for 2-4 minutes or until slightly charred. Flip, and baste about 1/2 of the garlic herb butter on the grilled/cut side while the bottom chars.
Flip the bread one more time, to grill the just basted side, for 1-2 minutes. You don't want the herbs to burn, just get nicely charred.
Remove from the grill and plate, with an extra drizzle of the garlic herb butter.
Serve warm or room temperature.
Recipe Courtesy of Megan Mitchell