Brussels Sprouts Sliders Recipe

Ingredients

• 6 tablespoons olive oil, divided
• 2 large sweet or yellow onions, sliced thin
• Salt to taste
• 20 large brussels sprouts
• 1 tablespoon tamari
• 2 to 3 cloves garlic, pressed
• a dash of liquid smoke (if desired)
• 1/2 teaspoon ground cumin
• 1/4 teaspoon cayenne pepper
• 8 ounces tempeh, cut into thin slices
• 5 teaspoons grainy mustard