This make ahead tater tot breakfast casserole with veggies is an easy, cheesy breakfast that comes together with just a few ingredients. Crispy tater tots, sautéed peppers, onion and spinach are baked in a fluffy egg and cheddar mixture, and you can prep this tater tot breakfast casserole the night before and bake it in the morning. It’s a vegetarian breakfast casserole the whole family will love, and it’s easy to add meat if you like.
Meals made in one dish are the best, and they’re even better when you can prep them in advance! This casserole can be enjoyed for breakfast, lunch or dinner, it’s great for kids and adults, and it’s perfect for holiday mornings when you have a house full of guests.
Why You’ll Love This Tater Tot Breakfast Casserole
- Make ahead friendly: Assemble it the night before and bake it in the morning.
- Feeds a crowd: It makes 8 large servings in one 9×13 pan.
- Packed with veggies: Peppers, onion and spinach add color and nutrition.
- Easy to customize: Swap in your favorite vegetables or add ham, bacon or sausage.
Ingredients for Tater Tot Breakfast Casserole
- Frozen tater tots: The crispy, golden base of the casserole. No need to thaw them.
- Eggs and milk: Whisked together to make the fluffy egg layer.
- Shredded cheddar cheese: Mixed into the eggs and sprinkled on top.
- Veggies: Garlic, yellow onion, red bell pepper and baby spinach.
- Olive oil: For sautéing the vegetables.
- Fresh parsley: For garnish.
Dietary note: This breakfast casserole is vegetarian as written. Many frozen tater tots are gluten free, so check the label if you need it to be gluten free.
How to Make Tater Tot Breakfast Casserole
- Preheat the oven: Preheat the oven to 350°F and lightly grease a 9×13 inch baking pan.
- Sauté the vegetables: Heat the olive oil in a nonstick skillet over medium-high heat. Add the garlic, onion and peppers and sauté for 2 minutes. Add the spinach and cook until wilted.
- Layer the casserole: Spread the frozen tater tots in an even layer in the pan, then spread the veggie mixture over the top.
- Add the egg mixture: Whisk together the eggs, milk and 1 cup of the cheddar cheese. Pour it over the tater tots and veggies, then sprinkle the remaining cheese on top. (To make ahead, cover and refrigerate at this point.)
- Bake: Bake for 35 minutes, or until the eggs are set and the top is golden brown.
- Cool and serve: Let the casserole cool for 10 minutes, then garnish with fresh parsley and serve.
Make Ahead Breakfast Casserole Tips
How to Make It Ahead
Assemble the casserole through step 4, cover it, and refrigerate it overnight. In the morning, pull it out of the fridge and pop it into the oven. You can also bake the whole casserole in advance and enjoy the leftovers throughout the week, since it reheats really well.
Can You Freeze Tater Tot Breakfast Casserole?
Yes! After baking, transfer the casserole to a freezer safe container and freeze for up to three months. Reheat in the microwave. Freezing individual servings makes for a quick grab and go breakfast.
Substitutions
Leave out the spinach or peppers, or swap them for your favorite vegetables. We also love diced potatoes, carrots or mushrooms in this vegetarian breakfast casserole. You can also add cooked ham, bacon or sausage.
What to Serve With Tater Tot Breakfast Casserole
- Something sweet: Pair it with a Blueberry Brioche French Toast Bake or a slice of Cranberry Crumb Cake for a holiday brunch.
- Fresh fruit: A bowl of berries or a fruit salad balances the cheesy casserole.
- Coffee or cocoa: Serve with coffee, a Mocha Latte or Homemade Hot Chocolate.
What People Ask About Tater Tot Breakfast Casserole
Yes. Assemble the tater tot breakfast casserole, cover it, and refrigerate it overnight. Bake it in the morning for about 35 minutes, until the eggs are set, adding a few extra minutes if it’s very cold.
No. Use the tater tots straight from the freezer. They bake up golden and crispy on top.
The eggs should be set in the center and the top should be golden brown. If the center still looks wet, bake it a few minutes longer.
Yes. Add cooked ham, crumbled bacon or browned sausage along with the vegetables.
Other Breakfast Casserole Recipes
- If you’re looking for something low carb, try this Sausage, Spinach and Feta Egg Bake.
- Craving something sweet? Try this Banana Berry Crunch Baked Oatmeal.
- If you’re looking for something that works for breakfast, lunch or dinner, try this Salsa Verde Baked Eggs Recipe.
Make Ahead Tater Tot Breakfast Casserole with Veggies
Ingredients
Method
- Preheat the oven to 350°F.
- Heat olive oil in a medium nonstick skillet over medium-high heat. Add garlic, onion and peppers. Sauté for 2 minutes. Add spinach and cook until wilted.
- Layer tater tots evenly over the bottom of a lightly greased 9×13 inch baking pan. Spread veggie mixture over the top.
- n a medium bowl, whisk together eggs, milk and 1 cup cheddar cheese. Pour over the tater tots and veggies. Sprinkle remaining cheese over the top.**You can cover and refrigerate at this point if baking later.**
- Bake for 35 minutes or until eggs are set and top is golden brown. Remove from the oven and let cool 10 minutes. Garnish with freshly chopped parsley and serve. Enjoy!
Nutrition
Tried this recipe?
Let us know how it was!Kitchen Tools Needed for This Make Ahead Breakfast Casserole
- Mixing Bowls are a staple in the kitchen. They are inexpensive too!
- Whisk everything together with a stainless steel whisk.
- Pour everything into a classic white casserole dish and bake.
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We typically add more veggies and eggs and in addition to tots on the bottom we add some to the top. All of these changes add up to a longer bake – usually around 50-55m
This breakfast casserole recipe is filled with veggies, which my family needs more of! I did add mushrooms and bacon and a little extra cheese to it. Thank you for making a healthy breakfast so easy! I am learning little by little and I cannot wait for the next breakfast recipe from you.