Asparagus Artichoke Breakfast Casserole

Name: Asparagus Artichoke Breakfast Casserole
Ingredients: 6 cups of 1 to 1 1/2-inch cubed rustic bread (about half a loaf), or 6 slices of bread; 2 ounces bacon (2 to 3 thick-cut slices), roughly chopped; 1 medium onion, chopped (about 1 1/2 cups); 1 pound of asparagus, trimmed of tough bottoms, spears sliced on the diagonal, in 1-inch long pieces; 1 15-ounce can of artichoke hearts (packed in water), drained, chopped; 2 Tbsp minced chives or green onion greens; 6 eggs; 2 cups milk; 8 ounces cheddar cheese, grated; 1 1/2 teaspoons salt; 1/4 teaspoon black pepper