Mix garlic paste with softened cream cheese until thoroughly combined.
Spread cream cheese evenly in the bottom of an extra-large cast-iron pan. Evenly layer ingredients in the following order: Chipotle peppers, onions, brisket, chili beans, pepper jack, cheddar and sliced jalapeƱos.
Place the cast iron into smoker 60 minutes. Add pecan chips to smoker box or tube.