Bacon, Mushroom & Zucchini Frittata
Crispy bacon, sautéed mushrooms, and tender zucchini set in a simple egg custard with a golden cheese crust. Everything cooks in the same skillet, stovetop to oven, done in thirty minutes.
The bacon renders first and leaves behind enough fat to cook everything else in. The onion softens in it. The mushrooms and zucchini follow, picking up flavor from the pan before the egg mixture locks it all together.
Ten grams of carbs and thirty-two grams of protein. No side dishes required. Cut it into wedges and eat it straight from the skillet.
Ingredients
- bacon 3 slices
- mushrooms 5 ounces
- zucchini 0.5
- red onion 0.25
- olive oil 1 tablespoon
- eggs 2
- milk, 2% reduced fat 1 tablespoon
- thyme, dried 1 teaspoon
- cheddar cheese, shredded 1 ounce
Method
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Preheat the oven to 350°F (180°C).
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Cut the bacon into pieces. Slice the mushrooms, cut the zucchini into half-moons, and slice the onion into thin rings.
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Heat the oil in an oven-safe skillet over medium heat. Add the bacon and cook until crispy, about 5 minutes.
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Add the onion and sauté for 2–3 minutes, until slightly softened. Add the mushrooms and zucchini, and cook for another 5 minutes until tender.
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In a separate bowl, whisk together the eggs, milk, thyme, salt, and pepper.
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Pour the egg mixture evenly over the vegetables and bacon in the skillet. Allow the mixture to set over low heat for 2–3 minutes without stirring.
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Sprinkle the cheese evenly over the top. Transfer the skillet to the preheated oven and bake for 10–12 minutes, or until the eggs are fully set and the top is lightly golden.
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Remove from the oven and let the frittata cool slightly. Cut into wedges and serve warm.
Sauté the mushrooms in the bacon fat, not water. Mushrooms are the richest dietary source of ergothioneine, a rare antioxidant your body goes out of its way to absorb through a dedicated transport system in your red blood cells, liver, and kidneys. Boiling washes out roughly 80% of it through the cooking water. Dry heat like sautéing and baking keeps it intact.
This frittata puts both sides of a research comparison on the same plate. A randomized crossover trial with 32 adults found that protein-matched mushrooms produced more fullness than the same calories from ground beef (p=0.045 for hunger, p=0.03 for prospective consumption). The 140 grams of mushrooms in this skillet are doing the volume work alongside the bacon.
Why This Works
Behind this recipe
Is this frittata keto-friendly?
At 10 grams of carbs and 44 grams of fat, this frittata fits comfortably within most ketogenic guidelines (typically under 20-50g net carbs per day). The carbs come almost entirely from the vegetables, not from hidden starches or fillers.
Why so many mushrooms in a single-serving frittata?
The 140 grams of mushrooms are not just filler. Research has found that protein-matched mushrooms produce more fullness per calorie than the same amount of ground beef. In a frittata that already has bacon and eggs for protein, the mushrooms are doing the volume work: keeping you full longer without inflating the calorie count.
Can I skip the oven and finish on the stovetop?
You can, but the oven gives you an even set and that golden cheese crust without overcooking the bottom. If you do not have an oven-safe skillet, cover the pan and cook over low heat for about 8 minutes. The top will not brown the same way, but the frittata will still set.
