These Mushroom Swiss Muffin Tin Bites are soft, savory, creamy, and baked without any crust. They look like mini mushroom Swiss quiches, but there is no pastry, pie crust, flour, or breadcrumb base anywhere. Instead, they are made with eggs, heavy cream, golden mushrooms, onion, garlic, fresh thyme, and shredded Swiss cheese.
This recipe is perfect for breakfast, brunch, snacks, meal prep, or a simple appetizer. The mushrooms are cooked first until their moisture evaporates and they turn golden, which gives the bites a deeper savory flavor and prevents the centers from becoming watery. Swiss cheese melts into the egg base and adds a rich, nutty taste that pairs beautifully with thyme and garlic.
Because these bites are baked in a muffin tin, they are easy to portion, serve, store, and reheat. The edges set and turn lightly golden while the centers stay soft and creamy. Let them rest in the muffin tin before removing so they finish setting and keep their shape.
Serve these warm with a side salad, fresh fruit, avocado, tomato slices, roasted vegetables, Greek yogurt dip, toast, or extra thyme on top.
Why You’ll Love This Recipe
These bites have the flavor of mini mushroom Swiss quiches without any crust.
They are soft in the center, golden around the edges, and easy to serve.
Mushrooms, onion, garlic, thyme, and Swiss cheese create a rich savory flavor.
They are perfect for breakfast, brunch, appetizers, lunchboxes, or meal prep.
They can be customized with cottage cheese, Gruyère, Emmental, spinach, chives, parsley, or red pepper flakes.
They bake quickly in a muffin tin and reheat well.
Recipe Details
Prep Time: 15 minutes
Cook Time: 16–18 minutes
Rest Time: 5 minutes
Total Time: 36–38 minutes
Yield: 12 muffin tin bites
Serving Size: 2–3 bites
Category: Breakfast, Brunch, Appetizer, Snack
Method: Baking
Cuisine: American-Inspired, French-Inspired
Diet: Vegetarian, Low-Carb, Crustless, Gluten-Free if using certified gluten-free ingredients
Ingredients
8 ounces fresh mushrooms, finely chopped
1 cup shredded Swiss cheese
4 large eggs
½ cup heavy cream
¼ cup onion, finely diced
2 cloves garlic, minced
2 tablespoons butter or olive oil
½ teaspoon salt
¼ teaspoon black pepper
1 teaspoon fresh thyme, chopped
Optional Add-Ins
Cottage cheese
Gruyère
Emmental
Spinach
Red pepper flakes
Chives
Parsley
Garlic powder
Smoked paprika
Optional for Serving
Side salad
Fresh fruit
Avocado
Tomato slices
Greek yogurt dip
Toast
Roasted vegetables
Extra thyme
How to Make Mushroom Swiss Muffin Tin Bites
1. Heat the Oven
Preheat your oven to 375°F / 190°C. Let the oven fully heat so the bites bake evenly and set properly.
2. Prep the Muffin Tin
Grease a 12-cup muffin tin very well with nonstick spray, butter, or oil. Egg-based recipes can stick easily, so generous greasing helps the bites release cleanly.
3. Cook the Onion
Heat the butter or olive oil in a skillet over medium heat. Add the diced onion and cook for about 2 minutes, until softened.
4. Add Garlic
Stir in the minced garlic and cook for about 30 seconds, just until fragrant. Avoid browning the garlic too much, as it can become bitter.
5. Brown the Mushrooms
Add the finely chopped mushrooms to the skillet. Cook for 5–7 minutes, stirring occasionally, until the moisture evaporates and the mushrooms turn golden.
6. Season the Filling
Stir in the salt, black pepper, and fresh thyme. Remove the skillet from the heat and let the mushroom mixture cool slightly before adding it to the eggs.
7. Whisk the Egg Base
In a large bowl, whisk the eggs and heavy cream until smooth and slightly frothy. This helps create a light, creamy texture.
8. Add Mushrooms and Cheese
Fold in the cooled mushroom mixture and shredded Swiss cheese. Stir gently until evenly combined.
9. Fill the Muffin Cups
Divide the mixture evenly among the muffin cups, filling each about ¾ full. Avoid overfilling because the bites may puff slightly as they bake.
10. Tap the Tin
Gently tap the muffin tin on the counter to release air bubbles and help the mixture settle evenly.
11. Bake Until Softly Set
Bake for 16–18 minutes, or until the edges are set and lightly golden but the centers still have a slight jiggle. They will continue to set as they rest.
12. Rest Before Removing
Let the bites rest in the muffin tin for 5 minutes. This helps the centers finish setting and makes the bites easier to lift out.
13. Loosen and Serve
Run a thin knife around the edges of each bite. Lift them out carefully and garnish with extra thyme if desired.
14. Split for the Reveal
Break one open while warm for that soft mushroom Swiss center.
Best Tip for a Soft, Not Watery Center
Cook the mushrooms until their moisture evaporates before adding them to the egg base. Mushrooms release a lot of liquid, and cooking them first keeps the bites creamy and set instead of watery.
Serving Suggestions
Serve Mushroom Swiss Muffin Tin Bites warm for breakfast or brunch with fresh fruit, avocado, toast, or tomato slices. For a lighter meal, pair them with a side salad, roasted vegetables, or Greek yogurt dip.
They also make a great appetizer for brunch boards or party trays. Garnish with extra thyme, parsley, chives, or a little black pepper for a fresh finish.
For a more filling plate, serve them alongside scrambled eggs, roasted potatoes, smoked salmon, or sautéed greens.
Tips and Variations
Use a mix of mushrooms for deeper flavor.
Cook the mushrooms until golden, not just softened.
Swap Swiss cheese for Gruyère or Emmental for a richer flavor.
Add cottage cheese for extra protein and creaminess.
Add spinach, but cook and drain it first to avoid extra moisture.
Use chives or parsley for a fresh finish.
Add red pepper flakes for a little heat.
Use smoked paprika for a deeper savory note.
Let the bites rest before removing so they hold their shape.
Storage and Reheating
Store leftover bites in an airtight container in the refrigerator for up to 4 days. Let them cool completely before storing.
To reheat, microwave in short intervals or warm in an oven or air fryer at 325°F / 165°C until heated through. The oven or air fryer gives the best texture.
These bites can also be frozen. Place cooled bites in a freezer-safe container and freeze for up to 2 months. Thaw overnight in the refrigerator before reheating.
Frequently Asked Questions
Are these mushroom Swiss bites really crustless?
Yes. These bites are made without crust, pastry, flour, breadcrumbs, or dough. The structure comes from eggs, cream, mushrooms, and cheese.
Can I add cottage cheese?
Yes. Cottage cheese can be added for extra protein and creaminess. Use a small amount and blend it if you want a smoother texture.
Can I use milk instead of heavy cream?
Yes, but the texture will be lighter and less rich. Heavy cream gives the bites the creamiest center.
Why are my bites watery?
The mushrooms may not have been cooked long enough. Cook them until the moisture evaporates before adding them to the egg base.
Can I make these ahead of time?
Yes. These bites are great for meal prep. Bake, cool, refrigerate, and reheat when ready to serve.
Can I use another cheese?
Yes. Gruyère, Emmental, mozzarella, cheddar, or Monterey Jack can work, but Swiss gives the most classic mushroom-Swiss flavor.
Final Thoughts
Mushroom Swiss Muffin Tin Bites are a cozy, crustless mini quiche-style recipe with golden mushrooms, creamy eggs, heavy cream, thyme, garlic, onion, and melted Swiss cheese. They are soft in the center, easy to portion, and perfect for breakfast, brunch, snacks, or appetizers.
Serve them warm with salad, fruit, avocado, roasted vegetables, or Greek yogurt dip for a simple savory bite that feels elegant but easy.
