Step 1

Heat the oven: Arrange a rack in the middle of the oven and heat to 400°F. Prepare space in the freezer for a baking sheet.

Step 2

Roast your vegetables: Combine the potatoes, peppers, and onions together in a medium bowl. Drizzle with the oil and 1/2 teaspoon of the salt, and toss to coat. Transfer to an even layer on a baking sheet and roast until the potatoes are tender, about 20 minutes.

Step 3

Cook your eggs: While the veggies roast, whisk together the eggs, milk, and remaining 1/2 teaspoon salt until combined. Melt the butter in a 10-inch skillet (cast iron or nonstick would be ideal) over medium heat. Add the eggs and cook, stirring occasionally, until mostly set but still moist, 4 to 5 minutes. Remove from the heat.

Step 4

Assemble the burritos: Let the eggs and roasted vegetables cool while you set up an assembly station — the eggs and vegetables should be room temperature for best assembly. Tear off 12 squares of aluminum foil. Have your cheese and tortillas standing by. Place a tortilla on top of a piece of foil. Sprinkle 2 tablespoons of cheese onto the tortilla. Top the cheese with 1/4 cup roasted vegetables, followed by 2 heaping tablespoons of the scrambled eggs, and any extra toppings.

Step 5

Fold the burritos: Roll the burrito tightly by folding the sides over the filling, then rolling from the bottom up.

Step 6

Wrap and freeze: Wrap the burrito tightly in the aluminum foil and repeat with filling and folding the remaining burritos. Freeze the burritos in a single layer on a baking sheet — they'll freeze faster and more uniformly this way. Store frozen burritos in a gallon-sized zip-top freezer bag for longer-term freezing.

Step 7

To eat: Unwrap and microwave on high for 1 to 2 minutes, until warmed through, or heat in a regular or toaster oven at 350°F for 12 to 15 minutes.