Preheat the oven to 400°F.

Line a baking sheet with parchment paper.

Place the salmon fillets skin side down on the baking sheet, and gently pat with a paper towel.

Place butter in a small microwave safe bowl. Microwave on high until melted, about 20 seconds.

Stir the lemon juice into the butter. Add the barbecue sauce and stir well to combine.

Spoon about 1 tablespoon of the barbecue glaze down the center of each salmon fillet. Use the back of the spoon to evenly coat the fillets with glaze.

Bake the salmon on middle rack of oven until the glaze is caramelized and the flesh flakes easily with a fork, 12-15 minutes.

Check to see that salmon is done. Remove from oven or add time as needed.

Squeeze fresh lemon juice over salmon and serve immediately. Refrigerate leftovers in an airtight container for up to 2 days.