Line a 9x13 baking dish with non-stick foil, or coat in baking spray.
Tear 3 plain bagels into bite-sized pieces, and place on the bottom of the baking dish in an even layer.
Sprinkle half of the cream cheese cubes and half of the sliced strawberries on top of the bagel pieces.
Tear the remaining 3 plain bagels into bite-sized pieces and place on top of the cream cheese/strawberries. Sprinkle the remaining cream cheese cubes and strawberries on top of the bagels.
In a blender, blend Eggland's Best eggs, heavy cream, milk, sugar, cinnamon and vanilla extract until well incorporated. Pour egg mixture over the casserole.
Cover the casserole with foil, and refrigerate for at least 4 hours, or overnight.
Preheat oven to 350 degrees and bake for 30 minutes, uncovered. Tent a piece of foil on top for the remaining 15 minutes (about 45 minutes altogether).
Allow to cool for at least 5 minutes before cutting into the casserole. Top with syrup, if desire.
Enjoy!