Bluegrass Beercheese Melts with Bourbon BBQ Glaze

Name: Bluegrass Beercheese Melts with Bourbon BBQ Glaze
Ingredients: 12 slices bacon; 1 stick butter, softened; 1 tablespoon olive oil; 2 small yellow onions, sliced thinly into rings; 1 poblano pepper, julienne; 1 green bell pepper, julienne; 1/2 cup ketchup; 3 tablespoons barbecue sauce; 3 tablespoons bourbon; 2 tablespoons yellow mustard; 2 tablespoons brown sugar; 2 cups grated sharp Cheddar; 1 tablespoon spicy steak sauce (recommended: A1 Bold and Spicy Steak Sauce); 1 clove garlic; 1/4 teaspoon garlic salt; 1 teaspoon cayenne pepper; 1/4 cup plus 1 tablespoon flat beer; 2 pounds freshly ground chuck; 2 teaspoons salt; 2 teaspoons freshly ground black pepper; Vegetable oil, for brushing grill; 12 slices Texas Toast