Begin by preheating your oven to 350 degrees.
Then you’ll start by buttering your 8×8 baking dish (or 9×13 casserole dish if doubling the recipe) and breaking up the bread into about 1-inch cubes.

Toss the bread into the buttered dish.

Melt your remaining 2 tablespoons of butter, and drizzle melted butter over bread pieces and set aside.

Next, in a large mixing bowl, mix together the eggs, milk, sugar, cinnamon, and vanilla.