Combine all ingredients in a medium-sized bowl and whisk until fully incorporated.

Liberally season front and back of each half-rack of ribs with prepared all-purpose BBQ rub.

Preheat smoker to 250 degrees Fahrenheit and select smoke level 5.

Once preheated, add ribs to smoker and start the smoke; cook for 2 and 1/2 to 3 hours, or until the color/bark on the ribs is mahogany colored. Chef’s Tip: If using multiple smoker racks, swap top and bottom racks at 1- and 1/2-hour mark to ensure even color/cooking.

Clear smoke, then place a double layer of aluminum foil on the counter and add 3 pats of butter, spanning the width of one half-rack of ribs, to the center of the foil.

Add a generous sprinkling of brown sugar over the pats of butter.

Remove a half-rack of ribs from smoker and place meat-side down over butter and brown sugar.

Wrap foil tightly around the ribs, careful not to tear the foil. Repeat the process for the other half-rack.

Return all foil-wrapped ribs to the smoker meat-side down and continue cooking for an additional 1 and 1/2 hours.

Remove foil-wrapped ribs from smoker, unwrap the foil from each, and return ribs to the smoker meat-side up for 1 additional hour. Optional: Lightly brush each half-rack of ribs with your favorite BBQ sauce. Chef’s Tip: Turn smoke back to level 5 for this phase for even more smoky flavor!

Remove ribs from smoker and allow to cool before cutting and serving; cut ribs from the back side to see bones and where to cut.