Overnight Crockpot Bacon Tater Tot Casserole Step-by-step instructions

Before you start

Before you start, make sure the bacon is cooked and crumbled—this can be done up to two days ahead and stored in the refrigerator. Grease the slow cooker insert with butter or nonstick spray so the casserole releases easily. Have the frozen tater tots, shredded cheddar, eggs, and heavy cream measured and ready.

Whisk the eggs and cream just before layering to ensure the custard is fresh and well combined. If you plan to serve the casserole immediately after cooking, warm your plates in the oven or microwave so the breakfast stays hot from the first bite to the last.

Instructions

Prep and Layer

1. 1Cook the bacon and prep the slow cooker
   Cook the thick-cut bacon in a large skillet over medium heat until crisp, about 8 to 10 minutes. Transfer to a paper-towel-lined plate to drain, then crumble into bite-size pieces. Lightly coat the inside of a 6-quart slow cooker with nonstick cooking spray or a thin layer of butter.
   Look for The bacon is crisp and crumbled, and the slow cooker is greased and ready.
   Tip For extra ease, use pre-cooked bacon and skip the skillet step.
2. 2Whisk the egg custard
   In a large mixing bowl, crack the 12 eggs and add the heavy cream. Whisk vigorously until the mixture is completely uniform and slightly frothy, about 1 to 2 minutes. The custard should be a single, smooth pale-yellow liquid with no streaks of white or yolk.
   Look for The egg mixture is smooth, frothy, and uniform in color.
   Tip Whisking thoroughly ensures the custard sets evenly during the long slow cook.

At the end of this phase, the slow cooker is filled with distinct layers: a bed of tater tots, a sprinkle of bacon and cheese, another layer of tots, and a final topping of bacon and cheddar.

The egg custard has been poured over, and you can see it seeping down through the layers. The top looks moist and slightly glossy. All ingredients are in place, and the slow cooker is ready to be covered and set to low.

Slow-Cook Overnight

3. 3Layer the tater tots, bacon, and cheese
   Spread half of the frozen tater tots in an even layer on the bottom of the slow cooker. Sprinkle half of the crumbled bacon over the tots, then top with half of the shredded cheddar. Repeat with the remaining tots, bacon, and cheddar, creating two distinct layers.
   Look for The slow cooker is filled with even layers of tots, bacon, and cheese.
   Tip Don't stir the layers—keeping them separate helps the casserole hold its shape when served.
4. 4Pour the egg custard over the layers
   Slowly pour the whisked egg and cream mixture evenly over the layered ingredients in the slow cooker. Gently shake the slow cooker or use a spatula to nudge the top layer so the custard can settle into the gaps. Do not stir.
   Look for The custard has seeped down through the layers, and the top looks moist.
   Tip If the custard pools on top, that's fine—it will be absorbed as it cooks.

After seven hours on low, the casserole has transformed. The top is golden and puffed, with melted cheese bubbling at the edges. The aroma of bacon and toasted potatoes fills the kitchen. The center is set and firm to the touch, and a knife inserted comes out clean. The internal temperature has reached at least 160°F (71°C). The casserole holds its shape when gently pressed.

Rest and Serve

5. 5Slow-cook on low overnight
   Cover the slow cooker with the lid and set it to LOW. Cook for 7 hours, undisturbed. The casserole is done when the edges are golden and puffed, the center is set, and a knife inserted into the middle comes out clean. The internal temperature of the egg custard should reach at least 160°F (71°C).
   Look for The top is golden and puffed, and the casserole is firm to the touch in the center.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Resist the urge to lift the lid during cooking—the steam helps the custard set.
6. 6Rest and serve with chives
   Turn off the slow cooker and let the casserole rest, uncovered, for 10 minutes. Use a spatula to cut and lift out squares of the casserole onto warm plates. Sprinkle with chopped fresh chives before serving.
   Look for The casserole holds its shape when lifted, and the cheese is melted and slightly golden.
   Tip Letting it rest firms up the custard, making it easier to serve neat squares.

After resting for 10 minutes, the casserole has settled and firmed up. When you cut into it, the layers hold together, and the texture is tender and moist. The cheese is melted and slightly stringy, and the tater tots have softened but still offer a pleasant bite. Sprinkled with fresh chives, each square is a golden, cheesy, satisfying breakfast portion.

Common mistakes

A common mistake is lifting the lid to check on the casserole—this releases steam and can cause the custard to remain undercooked. Trust the seven-hour low setting and only check at the end. Another pitfall is using pre-shredded cheese that contains anti-caking agents; these can prevent the cheese from melting smoothly.

For best results, shred the cheddar from a block yourself. Also, avoid over-whisking the eggs—you want a smooth custard, not a frothy one that can deflate during cooking. Finally, don't skip greasing the slow cooker, or the casserole may stick and be difficult to serve.

How to tell it’s done

The casserole is done when the edges are golden and puffed, the center is set (not jiggly), and a knife inserted into the middle comes out clean. The internal temperature of the egg custard should read at least 160°F (71°C) on an instant-read thermometer.

Let the casserole rest for 10 minutes before serving—this allows the custard to firm up slightly, making it easier to cut and lift out neat squares. If the top is browning too quickly but the center is still not set, your slow cooker may be running hot; reduce the heat to warm and let it finish gently.

• Egg dishes: 160°F (71°C) in the thickest part