4-5large croissants, Costco size, or about 7-8 regular grocery store croissants
¼cupunsalted butter, melted
¼cupgranulated sugar
¼cupbrown sugar
1tablespoonground cinnamon
dash salt
1teaspoonvanilla
6eggs
2cupshalf-and-half
additional ground cinnamon to sprinkle on top, about 1 teaspoon
Glaze
½cuppowdered sugar
3tablespoonshalf-and-half, or cream
Instructions
Butter a 9x13-inch pan. Break up croissants into large pieces and place in pan.
In a small bowl, mix together melted butter, granulated sugar, brown sugar, cinnamon, salt, and vanilla. Spread this mixture over the croissants.
Place 6 eggs and 2 cups half-and-half in a medium bowl or blender. Mix well.
Pour the egg mixture over the croissants and butter.
Cover with foil and place in the fridge for 2-8 hours or overnight. Alternately, this casserole can be made and baked immediately.
In the morning, remove from the fridge and let sit at room temperature for 30 minutes while preheating the oven to 350 degrees. Spray the side of foil that faces the croissants to prevent sticking.
Bake on the middle rack of the oven for 30 minutes, covered, then remove foil and bake an additional 15 minutes, until golden or until set in the middle.
Remove from the oven and let cool for 10 minutes. While cooling, mix powdered sugar and half-and-half in a small bowl or measuring cup. Whisk until smooth. Drizzle baked casserole with glaze and serve immediately.
Notes
I've tested this recipe with both Costco croissants and other croissant brands from grocery stores. The Costco croissants create a better finished product than grocery store croissants. I’ve found them to be less greasy and more flaky overall.
For best presentation, let the baked dish cool for a few minutes before adding the glaze so the glaze will be visible and not immediately melt into the croissants.
Mix in’s: Add ½ cup mini or regular chocolate chips, 1 chopped fresh apple, raisins, or a bit of grated orange or lemon rind.