Impossible Bacon Swiss Pie: Crustless, One Dish, Weekend Easy Tips, FAQ & printable recipe

Tips for success

Shred the Swiss yourself and keep it cold until the moment it goes on; cold shreds melt into longer ribbons and brown more evenly than cheese that has warmed and clumped.

When scattering it, sprinkle from a height so it falls in a fine rain — clumps trap steam and melt unevenly. If your oven runs hot and the top colors before the 35-minute mark, a loose sheet of foil for the final minutes protects it without slowing the center.

Cook the bacon in pieces rather than whole slices: half-inch bits render faster, crisp all around, and scatter evenly across the dish so every square gets its share.

Save a tablespoon of the rendered fat for the onion, and pour the rest into a jar once it cools — it is excellent for roasting potatoes later. Finally, resist opening the oven during the first 25 minutes; a steady temperature is what gives the pie its lift.

Variations

• Ham and cheddar: Swap the bacon for 2 cups of diced cooked ham and the Swiss for sharp cheddar. Skip the skillet step for the meat and simply soften the onion in butter; assemble and bake exactly as written.
• Vegetable garden pie: Replace the bacon with 2 cups of chopped blanched broccoli florets and keep the onion. Cook the onion in olive oil instead of bacon fat, and add a pinch of nutmeg to the batter for warmth.
• Mushroom and Gruyère: Sauté 10 oz of sliced cremini mushrooms with the onion until their liquid evaporates, then use Gruyère in place of the Swiss. The batter, bake time and assembly stay exactly the same.
• Green chile version: Stir one 4-oz can of diced green chiles, drained, into the batter with the baking mix, and use Monterey Jack instead of Swiss. The pie gains a gentle warmth without changing the method.

Storage and make-ahead

Fridge

Cover and refrigerate within 2 hours of baking; keeps up to 4 days.

Freezer

Freeze cooled squares wrapped tightly, up to 2 months; thaw overnight in the refrigerator before reheating.

Reheat

Oven at 325°F (165°C) for 10–15 minutes, or covered in the microwave at half power for 1–2 minutes per square.

Leftover squares keep well. Let them cool no more than 2 hours after baking, then cover the dish or transfer the pieces to an airtight container. Refrigerated, the pie stays good for up to 4 days, and the squares hold their layers better than you would expect — the self-made crust keeps them from going soggy. Reheat gently rather than blasting them, and the texture comes back almost fully.

The pie is an excellent make-ahead candidate. Cook the bacon and the onion up to 2 days in advance and refrigerate them separately; the batter takes 2 minutes to whisk, so there is no reason to make it ahead.

You can also bake the full pie the day before serving, cool it, refrigerate it covered, and reheat squares in the oven at 325°F (165°C) for 10 to 15 minutes. The puffed top settles overnight, but the flavor is arguably better on day two.

Serving ideas

Cut the pie into squares right in the dish, lifting each one out with a thin spatula so the bacon-and-onion layer stays intact. It is best warm, about 10 minutes out of the oven, when the Swiss still stretches slightly and the egg layer is tender but set. For brunch, pair it with a sharp green salad dressed with mustard vinaigrette — the acidity cuts through the richness — or with roasted potatoes and fruit.

For a casual dinner, serve a square per person alongside steamed green beans or blistered cherry tomatoes, and let the pie carry the meal on its own. A spoonful of whole-grain mustard or a dash of hot sauce on the side suits the bacon and Swiss beautifully without crowding them.

Whatever the occasion, bring the whole dish to the table and cut there; the golden top and the layers revealed in each square are part of the pleasure.

Frequently asked questions

Recipe card

Impossible Bacon Swiss Pie: Crustless, One Dish, Weekend Easy

Prep 15 minCook 40 minRest 10 minTotal 1 h 5 minServes 6

Ingredients

• 12 slices bacon, cooked until crisp and crumbled
• 1 medium white onion, diced
• 4 large eggs
• 2 cups whole milk
• 1 cup baking mix (all-purpose baking mix)
• 1/2 tsp kosher salt
• 1/4 tsp freshly ground black pepper
• 1 1/2 cups shredded Swiss cheese

Instructions

1. Cut the bacon crosswise into half-inch pieces and cook it in a large skillet over medium heat, stirring now and then, until the fat has rendered and the pieces are deeply crisped, 8 to 10 minutes. Lift the bacon out with a slotted spoon and let it drain briefly on a paper-towel-lined plate.
2. Pour off all but about a tablespoon of bacon fat. Add the diced onion to the skillet and cook over medium heat, stirring occasionally, until it turns translucent and just tender at the edges, about 4 minutes. Do not brown it; a pale, sweet onion keeps the pie's flavor clean.
3. Heat the oven to 350°F (175°C). Grease a 2-quart rectangular ceramic baking dish lightly. Scatter the crisp bacon and the softened onion evenly across the bottom of the dish, filling gaps so every future square gets some of both. Set the dish on a rimmed baking sheet to catch any bubbling.
4. In a medium bowl, whisk the eggs until uniformly beaten and lightly frothy. Whisk in the milk, then add the baking mix, salt and pepper and whisk until the batter is smooth, 30 to 45 seconds. A few small specks of flour are fine; large dry pockets are not. The batter should pour like thin pancake batter.
5. Pour the batter slowly and evenly over the bacon and onion, starting in the center and working toward the corners so the layer stays level. Tilt the dish gently if needed to settle the batter into the corners. The bacon and onion should sit beneath the batter, mostly covered.
6. Shower the shredded Swiss evenly over the batter, letting it fall in a fine rain rather than dropping it in clumps. Cover the corners and edges too; those areas brown first and benefit most from the cheese. Leave the surface loose — do not press the cheese into the batter.
7. Bake on the center rack until the pie is puffed, deep golden on top and bubbling gently at the edges, 35 to 40 minutes. The center should rise with the rest of the pie rather than staying sunken. Check at 30 minutes; if the top colors too fast, lay a sheet of foil loosely over the dish.
8. Take the dish out of the oven and let the pie rest at least 10 minutes. It will settle from its puffed peak and firm up enough to cut. Slice into squares right in the dish, lifting each piece out with a thin spatula so the bacon-and-onion layer stays intact underneath the set egg and melted Swiss.

Contains: gluten, eggs, milk

Estimated nutrition per serving

Calories

430

Protein

21 g

Carbohydrates

17 g

Fat

30 g

Fiber

1 g

Sugar

5 g

Sodium

820 mg

Automatic estimate from the ingredient list, not laboratory-verified.